Flat Bullhead

Ameiurus platycephalus

Ictaluridae · freshwater water fish

3 minute read · Species guide

Flat Bullhead field guide illustration

About Flat Bullhead

Ameiurus platycephalus, the flat bullhead, is a species of North American freshwater catfish native to the waters of the southeastern United States from Virginia to Georgia. This species grows to a maximum length of 29 cm (11 in) TL though it is more commonly about 23 cm (9 in) long.

Distribution and habitat

The flat bullhead is native to the southeastern United States where it is found in the lower parts of the drainages of the North American Atlantic Slope. Its range extends from the upper parts of the James River and the Roanoke River in Virginia, to the Altamaha River in Georgia. Its occurrence is widespread, it being present in all the drainages of South Carolina, for example. Its typical habitat is slow-moving, quiet stretches of rivers over mud or sandy bottoms, or over rock when it is covered with organic debris. It also occurs in lakes, ponds and behind dams, and younger individuals favour clear streams.

Ecology

This fish feeds on aquatic insects, molluscs, and small fish, with vegetation and detritus also being taken. Females mature when they are three years old. Breeding takes place during the summer, the fecundity of the females being between 200 and 1740 eggs each.

Status

While not caught for food, the flat bullhead is threatened by the predatory flathead catfish (Pylodictis olivaris) and blue catfish (Ictalurus furcatus), both of which have been introduced into its range. Other threats include water pollution, sedimentation, impoundment and changes in water quality. It is generally an uncommon species, but has a wide range, and the International Union for Conservation of Nature (IUCN) has assessed its conservation status as being of "least concern".

Article text: Wikipedia contributors, Ameiurus platycephalus (source revision). Licensed under CC BY-SA 4.0. Retrieved 2026-10-11.

Diet and feeding

The FishTraits compilation records these diet categories for this species: algae or phytoplankton; aquatic or other vascular plants; invertebrates or larval fish; larger animal prey (a source category covering fish, crayfish, crabs, or frogs). These are broad categories, not a claim that every individual consumes every example in a category.

Reported feeding positions include bottom feeding. The compilation combines published observations; diets can vary with age, locality, and available food.

Habitat preferences

Reported habitat associations include medium to large rivers, streams and small rivers, creeks, still-water habitats.

The source records associations with sand, gravel, cobble, boulders, vegetation. An association indicates reported use, rather than an exclusive requirement.

Reproduction and parental care

The compilation reports a representative maturity age of 3 years. Its maturity field summarizes mean, median, or modal estimates, usually for females; male estimates can be used when female data are unavailable. It is not a fixed age at which every fish first breeds.

Recorded spawning months are Jun, Jul for the source’s reporting region (NC). This is a regional calendar, not a range-wide schedule.

The reproductive-guild classification includes guarding eggs or young at a spawning substrate or nest.

Size and recorded longevity

FishTraits reports a maximum total length of 29 centimetres. Some entries use an estimated asymptotic length; this value should not be treated as a certified record catch.

Recorded longevity in the compilation is 6 years. Wild observations were preferred, but captive records were accepted where wild records were unavailable, and unspecified records were assumed wild. The value is not a guaranteed wild lifespan or an aquarium life expectancy.

Identification and appearance

Page and Burr (1991); Jenkins and Burkhead (1994). Another commonly used name is Ictalurus platycephalus.

Native range

Atlantic Piedmont and Coastal Plain from Roanoke River drainage, Virginia, to Altamaha River drainage, Georgia (Page and Burr 1991).

Introduction history

This species was intentionally stocked in North Carolina. Although tentatively considered native to the James River, Virginia, Jenkins and Burkhead (1994) reported that the species may have escaped from a stocked farm pond. Possibly introduced as a sportfish in drainages of Georgia outside its native range.

Range

Where it lives

Share of 1,519 GBIF observation records with a state location, across 7 states. The orange dots are USGS stream-survey sites where this species was caught.
0%
46.2%
Share of 1,519 GBIF observation records with a state location, across 7 states. The orange dots are USGS stream-survey sites where this species was caught.

A blank area on the dot layer usually means nobody sampled there, not that the fish is absent. Turn on “every survey site” to see where the survey looked.

The USGS stream survey caught it at 279 of its sites, in 4 states. That survey and the GBIF records are two different counts of two different things, so the site keeps them apart.

Habitat

Water and movement

Water
WoRMS records this species in fresh water.
USGS NAS habitat
Freshwater
US status
Native transplant — native to part of the United States, moved to other waters inside it.
Migration
Not migratory

Classification

Taxonomy

Kingdom
Animalia
Phylum
Chordata
Superclass
Actinopterygii
Class
Teleostei
Order
Siluriformes
Genus
Ameiurus
Species
Ameiurus platycephalus
ITIS TSN
164045
WoRMS AphiaID
1021283
GBIF key
2340966

Common questions about Flat Bullhead

What is the scientific name of Flat Bullhead?
The scientific name is Ameiurus platycephalus, in the family Ictaluridae. Classification follows ITIS.
Does Flat Bullhead live in fresh water or salt water?
WoRMS records this species in fresh water.
Where has Flat Bullhead been recorded in the United States?
GBIF has observations in 7 states, with the most records in North Carolina, Georgia, South Carolina. The map shows observation records, which do not establish the complete natural range.

Closest relatives

Other Ameiurus species

Same family

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Neosho Madtom3 states
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All 42 species in Ictaluridae