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© 2026 Barbless.co. Flow and gauge data from USGS; weather from Open-Meteo. · v2026.10.18.2

  1. Home
  2. Fish
  3. Catfish
  4. Bullhead Catfish

Updated June 25, 2026

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Bullhead Catfish: fish species profile

Fish › Catfish

CatfishIctaluridaeG5 (Secure) · ESA: Not listed · Idaho: SNA

Bullhead Catfish

Ameiurus nebulosus

A tough warmwater catfish that prowls muddy, weedy backwaters and feeds best after dark.

Overview

Size range

10–22 in

Size range

10–22 in

Size range

Typical adult length in the waters we cover.

Water temperature

Warmwater

Water temperature

Warmwater

Water temperature

Preferred thermal regime for this species.

Origin

Introduced

Origin

Introduced

Origin

Stocking and native history where this species is found.

About Bullhead Catfish

Bullhead catfish are an introduced warmwater member of the catfish family in Idaho. They commonly run about 10 inches, but can grow much larger, reaching roughly 22 inches.

Bullhead Catfish Silhouette

  • Bullhead Catfish species silhouette
    Primary

Behavior

spawning
Spawns in late spring to early summer as water warms; catfish typically use sheltered nest sites in quiet water.
feeding style
A nocturnal, bottom-oriented feeder that roots through soft bottoms and quiet water for food.
seasonal notes
Most active in warm water and often easiest to catch during low-light periods and at night.

Habitat

water types
lakes, ponds, reservoir backwaters, sloughs, swamps
preferred holds
Look for stagnant or slow-water areas with muddy bottoms, weeds, and sheltered backwaters.

Where Found

Not yet linked to waters

This species has not been linked to a river or lake in our catalog yet.

Angler Tactics

tactics
Fish simple bait presentations near the bottom around weeds, mud flats, and quiet shoreline pockets, especially after sunset when bullheads begin roaming to feed.
effective methods
bait fishing, night fishing, bottom rigs, bobber rigs, still-fishing

Regulations

Check the current Idaho fishing seasons and rules for the water you plan to fish, since harvest rules can vary by location.

Regulations vary by water. Check current Idaho Fish and Game rules before fishing.

Conservation

Status: Introduced to Idaho

G5 (Secure) · ESA: Not listed · Idaho: SNA

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OverviewSilhouetteBehaviorHabitatWhere FoundAngler TacticsRegulationsConservation

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