Longfin Black Skirt Tetra

The Longfin Black Skirt Tetra is a selectively bred variety of Gymnocorymbus ternetzi in which the dorsal, anal, and caudal fins have been dramatically extended into flowing, veil-like formations. The original species originates from the Paraguay and Paraná basins, and the longfin variety retains all of its hardiness and adaptability. The sweeping black-and-silver fins create a striking display in community aquariums, especially under bright lighting over a contrasting substrate. Peaceful and undemanding, this variety is suitable for beginners. It is important not to house it with known fin-nippers, as the elaborate fins are tempting targets.

Water: pH 6.0–7.5, temperature 20–27 °C; adaptable to soft or moderately hard water. Tank: 60 L minimum; avoid boisterous or fin-nipping tankmates. Planted tank with open space. Feeding: Omnivore; accepts all standard aquarium foods without difficulty. Breeding: Egg-scatterer; longfin trait is heritable. Standard characin breeding approach. Compatibility: Peaceful; avoid fin-nippers. Best with gentle community fish.