Common name: Black Widow Tetra
Latin name: Gymnocorymbus ternetzi
Maximum size: 5-6cm
Water chemistry: pH: 6-7.5, ideally soft (dH: 5-15), 20-27 C
Origin: Native to South America, Rio Paraguay and Guapore basins in Brazil, Bolivia and Argentina.
Temperament: Peaceful schooling fish.
Diet: Will thrive on good quality pelleted food such as NLS Community Formula. Benefits from the inclusion of live and frozen foods in its diet.
This species is found in most dealers’ tanks and is one of the best choices for the newcomer to fishkeeping. The intense black colouration of juveniles does fade as they grow, but adult fish provide a subtle contrast to most other commonly kept species.