Gymnocorymbus ternetzi · Easy care · 20 gallon minimum

A hardy, hexagon-bodied tetra with flowing black fins; can nip long fins so skip slow tankmates.
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A black skirt tetra (Gymnocorymbus ternetzi) reaches about 2.5 inches as an adult. Plan tank size and tank mates around the adult size, not the small fish you buy at the store.
Give a black skirt tetra a minimum of 20 gallons, with water at 70–82°F and a pH of 6–7.5. Keep them in groups of at least 6 — they are shoaling fish and become stressed and washed-out alone. As a easy-care, omnivore species, a stable, cycled tank with the right diet keeps them healthiest.
Pair a black skirt tetra with peaceful species that share its temperature and pH range. Compatible options include:
The black tetra, also known as the petticoat tetra, high-fin black skirt tetra, black skirt tetra, black widow tetra and blackamoor, is a species of freshwater ray-finned fish belonging to the family Acestrorhamphidae, the American characins.
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