Can Betta Fish Live With Upside Down Catfish?
No, upside-down catfish need 30 gallons minimum and are schooling fish that bettas will bully or stress.
Why
- Upside-down catfish grow to 4 inches and need a minimum 30-gallon tank to thrive.
- They are schooling fish that suffer stress when kept alone or in small groups.
- A betta will flare at and chase the catfish, causing chronic stress.
- The betta's territory and the catfish's need for open swimming space conflict.
What could go wrong
The betta harasses the upside-down catfish until it stops eating and dies from stress.
If you keep them in separate tanks
Sized for the 20 gallon minimum this pairing needs. Affiliate links — we earn a small commission if you buy through them.
AquaClear 30 Power Filter
Oversized filtration is what lets you stock two species together without water quality crashing. Rated for a tank slightly larger than the 20 gallon minimum.
Eheim Jager 150W Thermostat Heater
Holds a steady temperature inside the 76-78°F window both species need.
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.
Better pairings to consider
Upside-down catfish do well in groups of 3-5 with peaceful mid-sized tankmates. Bettas do well alone, with snails, or with rasboras.
Related compatibility questions
Keep reading
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