Species Guide
Black Bullhead Fishing: Seasonal Patterns & Bite Windows
Black Bullhead feed most actively in water between 80-84°F. Depth shifts with the season — anywhere from 2 ft to 16 ft deep depending on where they are in the yearly cycle. Black Bullhead feed most actively at Night, when activity runs about 33% above the daily average across all four light windows.
See today's Black Bullhead conditions →Natural history
How big do black bullhead get, and when do they spawn?
The cited facts behind the black bullhead — when they spawn, how big they run, what they eat, and how to tell them apart from look-alikes.
- Spawn
- May to July, when water reaches 68-70°F
- Typical size
- 7-12 in
- Trophy size
- 16-22 in · 2.3-5.5 lb
- Lifespan
- 3-10 yr
- Diet
- Omnivorous bottom feeder — midge and mayfly larvae above all, plus crayfish, worms, snails and the odd small fish, found by taste and smell rather than sight.
- Habitat
- Quiet, silty, weedy backwaters and shallow lakes — thrives in warm, murky, low-oxygen water that most gamefish cannot hold in.
- How to identify
- Dark chin barbels and a pale bar at the tail base, with a slightly notched tail — a yellow bullhead's chin barbels are white and its tail edge is straight.
- Notable record
- Iowa state record 5.5 lb, 22 in (1986)
Seasonal patterns
What depth do black bullhead hold, season by season?
Black Bullhead feed most consistently in water between 80-84°F. Depth below is where the fish typically hold at each stage of the year.
| Season | Depth |
|---|---|
| Pre-Spawn | 2-6 ft |
| Spawn | 2-4 ft |
| Post-Spawn | 2-6 ft |
| Summer | 3-16 ft |
| Fall | 3-16 ft |
| Winter | 8-16 ft |
Best times
When do black bullhead feed during the day?
Black Bullhead feed most actively at Night, when activity runs about 33% above the daily average across all four light windows.
- Dawn1.20x
Boosts feeding activity by about 20%.
- Daytime0.40x
Suppresses feeding activity by about 60%.
- Dusk1.40x
Boosts feeding activity by about 40%.
- Night1.50x
Boosts feeding activity by about 50%.
Conditions
How do barometric pressure and wind affect the black bullhead bite?
How far the model moves a black bullhead score away from this fish's baseline for each pressure trend and wind band. These are modeled multipliers, not a measured feeding response — the evidence behind each input is graded below.
Barometric pressure
- Falling1.00x
- Modeled flat — no change from this fish's baseline.
- Stable1.00x
- Modeled flat — no change from this fish's baseline.
- Rising1.00x
- Modeled flat — no change from this fish's baseline.
Barometric pressure is graded "Contested" in every report we produce: The barometric effect is real to most anglers but small and contested in the literature — several of the species studies cited in this model report null results — so it carries one of the smallest weights here.
Wind
- Calm (0-5 mph)1.00x
- Modeled flat — no change from this fish's baseline.
- Light (5-10 mph)1.05x
- Modeled about 5% above this fish's baseline.
- Moderate (10-20 mph)1.00x
- Modeled flat — no change from this fish's baseline.
- Strong (20+ mph)0.95x
- Modeled about 5% below this fish's baseline.
Wind is graded "Moderately supported" in every report we produce: Wind stacks forage on windward structure, but both the size and the direction of the effect depend on the species and the water, so it carries a modest weight.
Structure
What cover and structure do black bullhead prefer?
Black Bullhead carry the heaviest modeled preference for submerged wood. Each figure below is a 0-1 preference weight from this fish's own cited data, strongest first — not a measured catch rate.
- 01Submerged wood
- 02Weed edges
- 03Open sand & gravel
- 04Rock & rubble
FAQ
Common questions
What depth do black bullhead hold in pre-spawn?
In pre-spawn, black bullhead typically hold 2-6 ft deep.
What depth do black bullhead hold in spawn?
In spawn, black bullhead typically hold 2-4 ft deep.
What depth do black bullhead hold in post-spawn?
In post-spawn, black bullhead typically hold 2-6 ft deep.
What depth do black bullhead hold in summer?
In summer, black bullhead typically hold 3-16 ft deep.
What depth do black bullhead hold in fall?
In fall, black bullhead typically hold 3-16 ft deep.
What depth do black bullhead hold in winter?
In winter, black bullhead typically hold 8-16 ft deep.
What water temperature do black bullhead prefer?
Black Bullhead are most active in water between 80-84°F.
What time of day are black bullhead most active?
Black Bullhead feed most actively at Night, when activity runs about 33% above the daily average across all four light windows.
How does barometric pressure affect the black bullhead bite?
Falling pressure modeled flat — no change from this fish's baseline. Stable pressure modeled flat — no change from this fish's baseline. Rising pressure modeled flat — no change from this fish's baseline. These are modeled multipliers, not a measured feeding response. Barometric pressure is graded "Contested" in every report we produce: The barometric effect is real to most anglers but small and contested in the literature — several of the species studies cited in this model report null results — so it carries one of the smallest weights here.
How does wind affect black bullhead fishing?
Calm wind modeled flat — no change from this fish's baseline. Light wind modeled about 5% above this fish's baseline. Moderate wind modeled flat — no change from this fish's baseline. Strong wind modeled about 5% below this fish's baseline. These are modeled multipliers, not a measured feeding response. Wind is graded "Moderately supported" in every report we produce: Wind stacks forage on windward structure, but both the size and the direction of the effect depend on the species and the water, so it carries a modest weight.
When do black bullhead spawn?
Black Bullhead spawn May to July, triggered when water temperatures reach 68-70°F. The exact weeks shift with latitude, but the temperature cue holds.
How big do black bullhead get?
A typical black bullhead runs 7-12 in; a trophy is 16-22 in · 2.3-5.5 lb. Notable record: Iowa state record 5.5 lb, 22 in (1986).
What do black bullhead eat?
Omnivorous bottom feeder — midge and mayfly larvae above all, plus crayfish, worms, snails and the odd small fish, found by taste and smell rather than sight.