The black skirt tetra (Gymnocorymbus ternetzi) is a semi-aggressive fish that grows to about 2.5 inches and spends its time in mid-water. Keep at least 6 together, in a tank of 20 gallons or more, at 70–80°F and pH 6–7.5.
20 galsmallest tank
2.5″adult size
70–80°Ftemperature
6–7.5pH
6+group size
Semi-aggressivetemperament
Good tankmates
Avoid
- ✕Guppy: Black skirt tetra nip fins; Guppy has long fins.
- ✕Betta: Black skirt tetra nip fins; Betta has long fins.
- ✕Dwarf gourami: Dwarf gourami attacks, or is attacked by, Black skirt tetra.
- ✕Pearl gourami: Black skirt tetra nip fins; Pearl gourami has long fins.
- ✕Paradise fish: Paradise fish is aggressive and best kept alone.
- ✕Angelfish: Black skirt tetra nip fins; Angelfish has long fins.
- ✕Convict cichlid: Convict cichlid is aggressive and best kept alone.
- ✕Oscar: Oscar is aggressive and best kept alone.
From TankCoach's own species data: common hobby guidance for adults, rounded. Individual fish vary. Not veterinary advice.