Longfin Black Widow Tetra - (No Online Purchases)

Name: Longfin Black Widow Tetra / Longfin Black Skirt Tetra

Scientific Name: Gymnocorymbus ternetzi — longfin variety.

Description: An attractive tetra with a deep silver-grey body, two dark vertical bars and a black, skirt-like anal fin. This selectively bred variety features elongated, flowing fins. Hardy and active, their dark colouring may soften as they mature.

Origin: Captive-bred longfin variety of a South American species native to the Paraguay and Guaporé river basins.

pH: Approximately 6.0–7.5.

Temperature: Around 20–26°C.

Adult Size: Approximately 5–6 cm in body length; elongated fins add to its overall size.

Lifespan: Approximately 3–5 years with good care.

Food: Omnivorous. Feed quality tropical flakes or small pellets, supplemented with frozen or live foods such as brine shrimp, daphnia and occasional bloodworms.

Compatibility: Suitable with similarly sized community fish of compatible temperament. Keep in groups of at least eight, preferably ten to twelve, to help reduce chasing and fin-nipping. Avoid slow-moving, long-finned tank mates such as bettas and fancy guppies. Their own extended fins are also vulnerable to nippy fish.

Habitat: Provide an established freshwater aquarium with planted edges, shaded retreats and open swimming space. Use smooth decorations and gentle to moderate water movement to protect their flowing fins. Maintain effective filtration and regular partial water changes.