Inshore & surf · Saltwater
Sheepshead
Archosargus probatocephalus
Western Atlantic and Gulf of Mexico native, ranging from Nova Scotia through the Gulf. A porgy (Sparidae) built around hard structure: a euryhaline resident recorded from freshwater rivers and lakes through brackish estuaries, bays and sounds to offshore hard bottom.
Also called convict fish, sheephead, bay snapper.
- Surf
- Inshore
- Nearshore
- Regulated context
- 4 of 4 overlays reviewed
- Reviewed 2026-08-27
Before you target this fish
Regulated context — check the rules for the exact water
Where this applies Florida (FWC) state and adjacent federal waters, with separate and differing state rules along the Atlantic seaboard and the Gulf; GSMFC and ASMFC provide interstate coordination.
The reviewed context, unedited
Florida sets a 12 in total length minimum, a daily bag of 8 per harvester and a vessel limit of 50 per trip during March and April, open year round; harvest with multiple hooks in conjunction with live or dead natural bait is prohibited, as is snatching. FWC separately allows barnacles to be taken for chum with a recreational licence up to 100 lb per day, while oysters may only be harvested from approved shellfish areas - a bait-collection rule anglers routinely trip over. The species ranges from Nova Scotia through the Gulf and every state manages it differently; ASMFC has taken up sheepshead at the South Atlantic board level. Check current rules for the jurisdiction you are standing in.
Rules for this fish change at a state line and sometimes inside one. Check the ones that apply to the exact water you are standing on before you act on anything here — this record is biology, not permission.
Take this somewhere
This page is the record. The reading is what happens when you add water, a season and a temperature to it — that is where the families below get ranked against each other instead of just listed.
Those three links carry the fish and nothing else. No conditions were declared on this page, so none travel, and the link says so rather than sending an empty reading.
The half nobody publishes
What this record does not know
Everything else on this page comes from a named agency or peer-reviewed source. This is the other side of that: the questions a reviewer went looking for an answer to and came back without, and the fields the record leaves empty because filling them would mean guessing.
It is here rather than at the bottom because a page that only shows what it knows is easy to read as a page that knows everything. For Sheepshead there are 25 of them.
Named by a reviewer
21Somebody looked for this and wrote down that they did not find it.
- Behaviour
No thermal tolerance or preference numbers located; only the qualitative statement that adults leave estuaries during periods of low temperature. The catalog thermal block is omitted for that reason.
Nobody has sourced:
- No sourced diel pattern
- No sourced tide-stage relationship
- No sourced water-clarity, cold-front or angling-pressure response
- No sourced predator list or predator-avoidance behavior for adults
- Territoriality and aggression not addressed by any source consulted
- Three agency accounts of seasonal inshore-offshore movement are not fully consistent and no source reconciles them
- Identification
Nobody has sourced:
- Maximum size figures conflict across agency and museum sources (36 in versus ~30 in versus a 657 mm FL world record); no reconciled maximum
- The pinfish comparison is not sourced in detail; it is included because the confusion is real but the distinction here is thin
- Sexual dimorphism not addressed by any source consulted
- No sourced spawning coloration
- Meristic counts (fin rays, gill rakers, lateral line scales) not captured
- Forage
Nobody has sourced:
- Bryozoans, ascidians, echinoderms, seagrass, algae and detritus are all sourced prey with no class in the closed forage vocabulary; primaryForage necessarily understates the diet
- The quantitative diet data come from offshore reef habitat on the southeastern shelf; no comparably quantitative inshore oyster-reef diet study was located, and the same study says habitat drives the difference
- No seasonal diet data for winter or fall
- Relative importance of mollusks against crustaceans is close and habitat-dependent; the ordering here should not be treated as settled
- Season
Nobody has sourced:
- early_summer and late_summer entries omitted - no source distinguishes them from summer for this species
- No thermal numbers for any season; thermalContext is qualitative in the one entry that has it at all
- Agency accounts of the seasonal inshore-offshore movement conflict and are recorded unresolved rather than reconciled
- No tide-stage or light-sensitivity content in any entry, because no source consulted supplied it
- Seasonality is drawn from Gulf and South Atlantic sourcing; northern-range (Mid-Atlantic to Nova Scotia) seasonality is not sourced here
Absent from the record
4No reviewer wrote a gap here. The field is simply empty, which is its own answer.
- Water temperature
The temperature figures describe where this fish is found and caught, not a measured preference. Those are different claims and the record only has the weaker one.
- Identification
No reviewed image. A photograph is only in this catalog when an agency or a named creator labelled the subject, and nobody has cleared one for this species yet.
- Presentation
No species-specific weighting rule is reviewed for Sheepshead. Its ranking comes from the shared model — season, temperature, water type, holding and forage — with nothing added for this fish in particular.
- Population context
No regional population profile is registered. The species-level reading stands on its own; it does not silently become a local one.
Where the record puts it
Water and range
Surf
1 reviewed holding class- Jetty wash
Inshore
5 reviewed holding classes- Oyster bar
- Bridge piling
- Tidal creek
- Mangrove edge
- Grass flat
Nearshore
4 reviewed holding classes- Nearshore reef
- Artificial reef
- Wreck
- Pier structure
DepthStructure-following rather than depth-following. Inshore fish work oyster reefs, pilings, seawalls and tidal creeks; offshore adults occupy hard-bottom formations in depths to about 37 m. Juveniles settle into grassbeds and move to hard substrate at about 35-50 mm.
Moving waterNot sourced as a tide-stage or velocity relationship. What is sourced is that the species is tied to fouled hard structure - the food is attached to the structure rather than delivered past it, which is a different relationship to moving water than a drift-feeding fish has.
LightNot sourced. No diel pattern was reported by any source consulted.
Thermal band
Temperature
- Reported active
- 50–80°F
These describe where the fish is found, not what it prefers.
Heil (2017, FSU MS thesis, already cited in this record) logged water temperature at northeastern Gulf artificial reefs and reported sheepshead first appearing on the reefs at 10.1-12.1°C (50-54°F) in January and dispersing as temperatures rose through 21-26.6°C (70-80°F) in April. This is a field presence/absence observation tied specifically to the offshore winter-spawning aggregation, not a lab preference test or a claim about the species' full thermal range — sheepshead are caught inshore across a much broader span, and GSMFC, FWC, and SC DNR sourcing independently confirms only the qualitative pattern that adults leave estuaries for offshore structure during cold periods, without giving numbers.
How it uses water
Behaviour
Sourced language is 'congregate around reefs' rather than schooling in open water. The aggregation is a consequence of the food being attached to structure, not a pelagic schooling behavior.
A grazer and crusher on fouled hard structure. Incisor teeth at the front of the jaw take attached prey off the substrate and molar-like grinders behind crush it. The quantitative offshore diet study found sessile invertebrates to be the most important prey - which is a fundamentally different feeding problem from chasing something that swims.
Not sourced. No diel pattern was reported in any source consulted; 'mixed' records absence of evidence rather than a finding.
Seasonal activityThe clearest sourced behavioral pattern in the species. Gulf agency sourcing describes fish moving from inshore areas offshore in late fall to congregate around reefs, remaining offshore until spawning ends in late spring, when some portion of the adult population returns inshore - with evidence that some adults remain offshore year round. A state agency account describes year-round residents that move offshore during winter cold periods and concentrate in shallow water in spring and late fall. FWC describes fish moving closer to shore during late winter and spring spawning. The three accounts are not fully consistent and the record keeps all three rather than picking one.
Temperature-driven behaviourQualitative only. Adults remain in inshore waters during warmer months and move out of estuaries during periods of low temperature. No thermal tolerance limits or preference range were located, so the catalog thermal block is omitted rather than guessed.
Depth movementInshore over structure in warm months; offshore hard bottom to about 37 m in the cold part of the year, with an incomplete return inshore around the spawning period.
Facing the currentNot sourced.
Water levelNot sourced as a tide-stage relationship. Sheepshead hold on structure whose food supply is attached to it, so the tidal argument that governs a flats species does not transfer, and no source consulted substitutes one.
ClarityNot sourced.
CoverFouled hard structure of every kind the sources name: oyster reefs, seawalls, bridge and dock pilings, jetties, oil and gas platforms, wrecks, artificial reefs and natural hard bottom. Grassbeds function as a juvenile nursery before the shift to hard substrate.
Open waterNot a species of open water. Even the offshore phase is structure-associated hard bottom.
Predator avoidanceNot sourced. Structure association is the obvious mechanism but no source consulted addressed predation on adults.
Spawning (conservation context)Conservation context only. Sheepshead are fractional (batch) spawners maturing quickly, at age 2 in the northeastern Gulf and between ages 2 and 5 by other accounts. The season runs from roughly January through May with a March-April peak in the Gulf, and January-April peak in one northeastern Gulf study. Sources conflict on location: Gulf and Georgia sourcing puts nearly all spawning fish on or near offshore reef habitat, a northeastern Gulf study puts spawning primarily on offshore artificial reefs with some activity in nearshore channels, and FWC describes inshore spawning. Spawning concentrations of any kind are excluded from targeting in this catalog.
Where the general rule stops
- Sheepshead have very sharp gill covers and dorsal spines; agency sourcing warns about them specifically at cleaning. That is a handling fact, not presentation guidance.
- The two largest prey groups by volume in the one quantitative offshore diet study - bryozoans and ascidians - have no class in the closed forage vocabulary. The forageClasses field therefore understates what this species actually eats.
- This record does not include coordinates or named reefs, wrecks or jetties, and we never give them.
What it can eat
Forage
- Mollusks
- Crustaceans
A crushing benthic feeder on attached and hard-shelled prey, which is why both mollusks and crustaceans belong here and neither alone is sufficient. In the one quantitative offshore study, pelecypod (bivalve) mollusks occurred in 74.2% of stomachs at 10.4% of volume and barnacles in 71.0% at 3.0% of volume, with amphipods in 64.3% at 0.4% - so mollusks lead crustaceans by volume while barnacles lead by frequency, and the two classes are close and habitat-dependent. Northeastern Gulf sampling during reproductive periods found crustaceans, mollusks and plant material dominant, with barnacles, stone crabs and oysters the leading identified prey. Important caveat: the two largest prey groups by volume in that offshore study were bryozoans (80.6% frequency, 37.5% volume) and ascidians (61.3% frequency, 30.2% volume), and neither has a class in the closed forage vocabulary - so this field structurally understates the diet. Seagrass, algae and detritus are also eaten and are likewise unrepresentable. Capacity is not a current bait event.
- Feeding style
- Specialized
- Feeding zone
- Benthic
Through the year
- Spring
- Gulf sourcing records that fishes were also commonly preyed on in spring, alongside the usual attached invertebrates. This is capacity, not a declared bait event.
- Summer
- Plants and detritus were fed on most commonly in summer per Gulf sourcing - a genuine omnivorous shift, and one the closed forage vocabulary cannot express.
By life stage
- Juvenile
- Zooplankton and larvae early, then bivalves, crabs and algae taken off hard surfaces once settled. Juveniles settle into grassbeds before shifting to hard substrate at about 35-50 mm.
- Adult
- Attached and hard-shelled benthic prey: bryozoans, ascidians, echinoderms, young oysters, clams and other bivalves, blue crabs, barnacles and other crustaceans, with small fish taken as well.
Prey sizeDocumented as a compositional rather than a size shift. In the offshore study, fish under 350 mm took bryozoans at 76.2% of volume, while fish at or above 350 mm took more attached pelecypods and showed greater diet diversity in echinoderms and ascidians.
Ontogenetic shiftPlanktivory as larvae and small juveniles, then a shift onto attached and hard-shelled prey that coincides with the physical move from grassbeds to hard substrate at about 35-50 mm.
SubstitutionsStrongly habitat-driven. The offshore study explicitly noted that algae availability differs significantly between inshore and offshore reef environments, and emphasised habitat-driven diet differences over seasonal ones. An inshore oyster-reef diet and an offshore hard-bottom diet are not the same diet.
Diet capacity is not proof that a prey event is occurring. Observed current forage still comes from a user observation or Hatch Match.
Through the year
Season
Winter
- Where they sit
- Offshore hard bottom, artificial reefs, wrecks and platforms for the offshore portion of the population; jetties, bridge and dock pilings and oyster reefs for fish still inshore.
- Depth
- Offshore hard-bottom formations to about 37 m for fish that have moved out.
- Movement
- Adults are described as moving out of estuaries during periods of low temperature and congregating around reefs after moving offshore in late fall.
- Temperature
- Qualitative only - no thermal numbers were sourced for this species. The movement is described against 'low temperature' without a threshold.
- Cover
- Fouled hard structure.
What that changesBottom contact and structure vertical over nearshore hard structure; structure pitch and live or natural bait suspension where fish remain on inshore structure.
What would count against it
- assuming the whole population has left inshore structure - sources report some adults remain offshore year round and others remain inshore
The sourced spawning period begins as early as January in the northeastern Gulf.
Early spring
- Where they sit
- Offshore and nearshore reef structure through the spawning peak; inshore oyster reefs, pilings and jetties as fish return.
- Movement
- FWC describes sheepshead moving closer to shore during late winter and spring spawning; Gulf sourcing has fish remaining offshore until spawning ends in late spring. The accounts conflict.
What that changesStructure pitch and live or natural bait suspension inshore; bottom contact and drop presentation over nearshore hard structure.
What would count against it
- picking one of the two conflicting agency accounts of spring movement and treating it as settled
Peak spawning is March-April in the Gulf, with a Georgia study finding 98% of spawning fish on or near offshore reef habitat. Spawning concentrations are excluded from targeting. Florida's 50-fish vessel limit applies specifically during March and April, which is an explicit management response to concentration in this period.
Spring
- Where they sit
- Inshore oyster reefs, pilings, seawalls, tidal creeks and jetties as the return inshore progresses; offshore hard bottom for fish still out.
- Movement
- Gulf sourcing has some portion of the adult population returning inshore when spawning is over in late spring. A state agency account describes concentration in shallow water in spring.
- Forage
- Gulf sourcing records that fishes were also commonly preyed on in spring, in addition to the attached invertebrates that dominate the diet year round.
What that changesStructure pitch and live or natural bait suspension on inshore structure; tidal drift bait along structure edges when water is moving.
What would count against it
- treating a return inshore as a bite prediction
- using diet capacity as evidence of a current baitfish event
The sourced spawning season runs through May.
Summer
- Where they sit
- Inshore oyster reefs, pilings, seawalls, mangrove edges and tidal creeks; jetty structure in the surf zone.
- Movement
- Adults remain in inshore waters during the warmer months.
- Forage
- Plants and detritus were fed on most commonly in summer per Gulf sourcing - a group the closed forage vocabulary cannot express.
What that changesStructure pitch and live or natural bait suspension on inshore structure; surf bait soak at jetty structure.
What would count against it
- assuming an inshore fish is a shallow-water fish in the flats sense - the constraint is structure, not depth
Fall
- Where they sit
- Inshore structure, with a shift toward nearshore and offshore hard structure beginning.
- Movement
- A state agency account describes concentration in shallow water in late fall; Gulf sourcing describes the move offshore beginning in late fall. Both are recorded.
What that changesStructure pitch inshore; bottom contact and structure vertical as fish shift to nearshore hard structure.
What would count against it
- reading the two conflicting fall accounts as a single movement direction
Late fall
- Where they sit
- Nearshore and offshore reef structure, wrecks and platforms; remaining inshore hard structure.
- Movement
- The sourced offshore movement and reef congregation happens in late fall.
What that changesBottom contact, structure vertical and drop presentation over nearshore hard structure.
What would count against it
- converting 'congregate around reefs' into a named place
Movement toward the reef structure on which most spawning is reported begins here. Concentration is recorded as biology, never as holding water.
Spawning · Winter, Early spring, Spring
Conservation context only. Sources agree on the season and disagree on the place. Gulf agency sourcing gives peak spawning in March and April with larvae collected January through May, peaking February to April, and reports that 98% of spawning sheepshead in a Georgia study were captured on or near offshore reef habitat. A Florida State University thesis on the northeastern Gulf gives a January-through-May season peaking January to April, with spawning primarily on offshore artificial reefs and some activity in nearshore channels. FWC, by contrast, describes sheepshead spawning in inshore waters in March and April. Sheepshead are fractional (batch) spawners. This catalog records the disagreement and does not resolve it, and does not treat any spawning concentration as holding water.
Recorded as conservation context. No spawning site, staging concentration or migration bottleneck is named anywhere in this catalog, because naming one is how a population gets fished out.
Telling it apart
Identification
What to look at
- Five or six dark vertical crossbars on the side over a silvery to greenish-yellow or grayish ground. Gulf populations west of Alligator Harbor, Florida have been reported with only five bars on one or both sides.
- No barbels on the lower jaw - this is the character that separates sheepshead from a barred juvenile black drum.
- Four broad incisor-like teeth on each side of the front of the jaw, backed by rows of molar-like grinders. The teeth are visible from outside the mouth and are the single most distinctive character.
- Blunt snout with a small, nearly horizontal mouth.
- Dorsal and anal spines are stout and sharp; the gill covers are sharp enough that agency sourcing warns about them at cleaning.
- Average adult length
- Maturity is reached quickly - age 2 in the northeastern Gulf, with other sourcing giving a 2-5 year range. Typical fish are around 13-14 in.
- Common angling size
- Agency sourcing describes catches typically around 13 in; a state agency account gives typical specimens at about 14 in and 3 lb, and a museum source gives 14-18 in and 1-8 lb.
- Typical weight
- About 1-8 lb, commonly around 3 lb.
- Maximum documented
- Sources differ. The all-tackle world record is given as 9.63-9.66 kg (about 21 lb 4 oz) at 657 mm fork length from Louisiana. Maximum observed sizes in regional studies ranged from 522 mm FL in northwest Florida to 580 mm FL in Georgia, and a northeastern Gulf study gave 507 mm FL. FWC states the species reaches up to 36 in; a museum source gives almost 30 in and 22 lb. The Florida state record is 15 lb 2 oz and the South Carolina record 16 lb 6 oz.
- Longevity
- Reported maximum age varies strongly by region: 15 years in northwest Florida, 18 years in the northeastern Gulf, and 26 years in South Carolina, with a state agency account giving about 25 years. Growth is rapid for the first three to four years, reaching roughly 80% of theoretical maximum size by age 5, then slowing sharply.
What it gets confused with
- Black drum (juvenile)
- Juvenile black drum carry four to six dark vertical bars and are routinely mistaken for sheepshead. Black drum have chin barbels on the lower jaw and sheepshead have none; black drum have a subinferior mouth and no incisor teeth; and black drum reach far larger sizes. Barbels are the reliable check.
- Atlantic spadefish (Chaetodipterus faber)
- Also deep-bodied and barred, but with a much shorter snout, a rounder body outline and greatly enlarged dorsal and anal fins. It lacks the sheepshead's incisor dentition.
- Pinfish (Lagodon rhomboides)
- Another sparid on the same structure, but far smaller, with faint vertical bars, a yellow-and-blue cast and a dark shoulder spot rather than bold black crossbars. Not resolved in detail by the sources consulted - treated as a partial entry.
What follows from all of that
Presentation families
Surf
Surf bait soak
Hold a natural bait still on the bottom of a trough or cut and let moving water bring fish to it.
- enough lead to hold
- read the trough
- let the rod load
- reset as the tide moves the bar
What it asks of the tackle
- Depth control
- Low
- Sensitivity
- Moderate
- Casting distance
- Long
- Weight range
- 2–8 oz of lead
- Cover resistance
- Moderate
- Line visibility
- Secondary
- Retie frequency
- High
Inshore
Structure pitch
Put a bait tight against hard structure and get it out again before the tide sweeps it into the barnacles.
- accurate short casts
- immediate contact
- lead them out
- expect abrasion
What it asks of the tackle
- Depth control
- Moderate
- Sensitivity
- High
- Casting distance
- Short
- Weight range
- 1/8–3/4 oz
- Cover resistance
- High
- Line visibility
- Secondary
- Retie frequency
- Very high
Live / natural bait suspension
Present a natural food form with enough life or scent to hold in a station without looking mechanical.
- keep it alive or fresh
- match the holding depth
- minimize hardware bulk
- detect without pulling it away
What it asks of the tackle
- Depth control
- High
- Sensitivity
- High
- Casting distance
- Short to moderate
- Weight range
- As light as conditions allow
- Cover resistance
- Moderate
- Line visibility
- Low
- Retie frequency
- High
Tidal drift bait
Let a natural bait travel at the speed of the tide along an edge fish are feeding on.
- match weight to the run
- stay in the seam
- let it swing at the end
- reset up-tide
What it asks of the tackle
- Depth control
- Moderate
- Sensitivity
- High
- Casting distance
- Short to moderate
- Weight range
- 1/8–1 oz
- Cover resistance
- Moderate
- Line visibility
- Low
- Retie frequency
- High
Nearshore
Bottom contact
Keep a bait on or just above the substrate along a break, flat, or inside a weed edge.
- feel bottom
- drag or hop
- pause on the break
- stay in contact
What it asks of the tackle
- Depth control
- High
- Sensitivity
- High
- Casting distance
- Moderate
- Weight range
- 1/8–1/2 oz
- Cover resistance
- High
- Line visibility
- Low
- Retie frequency
- High
Structure vertical
Hold a presentation in the water column directly over hard structure and stay there as the boat moves.
- stay vertical
- hold the depth band
- short lifts
- reset when the line angles
What it asks of the tackle
- Depth control
- High
- Sensitivity
- High
- Casting distance
- None
- Weight range
- 2–16 oz
- Cover resistance
- High
- Line visibility
- Secondary
- Retie frequency
- High
Live / natural bait suspension
Present a natural food form with enough life or scent to hold in a station without looking mechanical.
- keep it alive or fresh
- match the holding depth
- minimize hardware bulk
- detect without pulling it away
What it asks of the tackle
- Depth control
- High
- Sensitivity
- High
- Casting distance
- Short to moderate
- Weight range
- As light as conditions allow
- Cover resistance
- Moderate
- Line visibility
- Low
- Retie frequency
- High
Drop presentation
Let a bait fall on a controlled line into cover, along a wall, or through a hole in vegetation.
- place then fall
- watch the line
- hold at depth
- short hop only after the fall
What it asks of the tackle
- Depth control
- High
- Sensitivity
- High
- Casting distance
- Short
- Weight range
- 1/16–3/8 oz
- Cover resistance
- High
- Line visibility
- Low
- Retie frequency
- High
What moves them for this fish
No species-specific rule is reviewed for Sheepshead. Its ranking comes from the shared model — season, temperature, water type, holding water, forage — with nothing added for this fish in particular. That is a gap, not a claim that nothing is special about it.
Where every sentence came from
Sources
Agency
Gulf States Marine Fisheries Commission 2006, Sheepshead Fisheries Profile (GSMFC No. 143)
Used for habitat, thermal band and presentation families; identification; behaviour; forage; season. Read 2026-08-30, next check 2026-11-27.
Agency
South Carolina Department of Natural Resources - Sheepshead species account
Used for habitat, thermal band and presentation families; identification; behaviour; forage; season. Read 2026-08-30, next check 2026-11-27.
Agency
Florida Fish and Wildlife Conservation Commission - Sheepshead species profile
Used for identification; behaviour. Read 2026-08-30, next check 2026-11-22.
Agency
Florida Fish and Wildlife Conservation Commission - Sheepshead regulations and species profile
Used for habitat, thermal band and presentation families. Read 2026-08-27, next check 2026-11-27.
Agency
Florida Fish and Wildlife Conservation Commission - Sheepshead species profile and regulations
Used for season. Read 2026-08-30, next check 2026-11-18.
Peer reviewed
Used for identification; behaviour; forage; season. Read 2026-08-30, next check 2026-11-22.
Peer reviewed
Used for habitat, thermal band and presentation families; forage. Read 2026-08-30, next check 2026-11-27.
Peer reviewed
Used for behaviour; season. Read 2026-08-30, next check 2026-12-06.
Peer reviewed
Used for habitat, thermal band and presentation families. Read 2026-08-27, next check 2026-11-27.
Synthesis
Florida Museum of Natural History - Archosargus probatocephalus species profile
Used for habitat, thermal band and presentation families. Read 2026-08-27, next check 2026-11-27.
Synthesis
Florida Museum of Natural History - Archosargus probatocephalus species profile (similar species)
Used for identification. Read 2026-08-30, next check 2026-11-22.
A source with no link predates the rule that one has to carry a URL. It is still a real citation and still checkable; it just takes a search rather than a click, and that is worth knowing before you rely on it.