Bullhead Aquarium Care Guide
Cottus gobio
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Aquarium Information
- Care level: intermediate
- Temperament: territorial
- Diet: carnivore
- Minimum tank size: 75 liters (20 gallons) for a single specimen, larger for groups
- Compatibility: Best kept in a species-specific tank or with other cold-water, bottom-dwelling fish of similar size that are not easily intimidated. Avoid small, active fish that might outcompete them for food or larger, aggressive fish.
- Special requirements: Requires excellent water quality, high oxygenation, and a well-structured tank with plenty of hiding places (rocks, caves, driftwood). A sand or fine gravel substrate is preferred, allowing them to burrow. Strong filtration is essential, but avoid strong currents in the main tank area. They are sensitive to elevated temperatures and pollution.
Water parameters
- Temperature
- 10-20°C (50-68°F)
- pH level
- 6.5-7.5
- Hardness
- 5-15 dGH
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