Black Skirt Tetra

Gymnocorymbus ternetzi

A hardy, deep-bodied tetra in smoky black-to-grey — an occasional fin-nipper.

Water

Freshwater

Temperature

70–80°F

pH

6–7.5

Hardness

4–18 dGH

Max size

2.2 in

Min tank

20 gal

Temperament

Semi-aggressive

Social

Schooling (6+)

Swim level

Middle

Diet

Omnivore

Care level

Beginner

Lifespan

3-5 years

Breeding

Egg-scatterer

Suitability

Common

Origin

Paraguay and Guaporé basins

Black skirts are tough and adaptable but can nip flowing fins, so keep them grouped and skip long-finned tankmates. The dyed and 'GloFish' versions sold are this species.