The congo tetra (Phenacogrammus interruptus) is a peaceful fish that grows to about 3.5 inches and spends its time in mid-water. Keep at least 6 together, in a tank of 30 gallons or more, at 73–82°F and pH 6–7.5.
30 galsmallest tank
3.5″adult size
73–82°Ftemperature
6–7.5pH
6+group size
Peacefultemperament
Good tankmates
Avoid
- ✕White cloud mountain minnow: Congo tetra and White cloud mountain minnow need different temperatures (73–82°F vs 60–72°F).
- ✕Rosy barb: Congo tetra and Rosy barb need different temperatures (73–82°F vs 64–72°F).
- ✕Paradise fish: Paradise fish is aggressive and best kept alone.
- ✕Convict cichlid: Convict cichlid is aggressive and best kept alone.
- ✕Oscar: Oscar is aggressive and best kept alone.
- ✕Fancy goldfish: Congo tetra and Fancy goldfish need different temperatures (73–82°F vs 65–72°F).
- ✕Comet goldfish: Congo tetra and Comet goldfish need different temperatures (73–82°F vs 60–72°F).
- ✕Pea puffer: Pea puffer is aggressive and best kept alone.
From TankCoach's own species data: common hobby guidance for adults, rounded. Individual fish vary. Not veterinary advice.