Will pictus catfish eat my betta?

Pictus catfish eat anything that fits in their mouth. Small bettas or stressed bettas that settle near the bottom at night could be attacked.

Are pictus catfish active during the day?

Pictus catfish are unusual catfish that are active during the day, but they are most active at dawn, dusk, and night when bettas are most vulnerable.

How many pictus catfish do I need?

Pictus catfish need schools of at least 3-5 individuals. A 55-gallon tank is the minimum for a small group, with 75+ gallons being better.

Can Betta Fish Live With Pictus Catfish?

By Alex WalshLast reviewed Apr 18, 2026

No, pictus catfish grow 4-5 inches, are active nocturnal swimmers, need 55+ gallons, and may eat bettas at night.

Why

Pictus catfish grow 4-5 inches and are active, fast-swimming catfish that need 55-75 gallons minimum.
They are primarily nocturnal and become most active when bettas are resting, increasing the risk of attacks.
Pictus catfish will eat anything small enough to fit in their mouth. Betta fry would be food, and stressed adult bettas could be attacked.
They need schools of at least 3-5 individuals, requiring larger tanks than betta setups typically provide.
Pictus catfish have sharp dorsal spines that can injure bettas during nighttime encounters.

Minimum shared tank

55 gallons

Shared temperature range

76-81°F

What could go wrong

Pictus catfish may attack or injure a resting betta at night when the betta cannot defend itself, and their sharp spines can cause puncture wounds.

If you keep them in separate tanks

Sized for the 55 gallon minimum this pairing needs. Affiliate links — we earn a small commission if you buy through them.

Fluval 307 Performance Canister Filter

Oversized filtration is what lets you stock two species together without water quality crashing. Rated for a tank slightly larger than the 55 gallon minimum.

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Eheim Jager 300W Thermostat Heater

Holds a steady temperature inside the 76-81°F window both species need.

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API Freshwater Master Test Kit

Keep ammonia, nitrite, and nitrate in check. Two-species tanks have more bioload and less margin for error than single-species setups.

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Better pairings to consider

Bettas do well with peaceful daytime catfish like corydoras. Pictus catfish do well with large tetras, rainbowfish, or other semi-aggressive cichlids in large tanks.