Black Widow Tetra Gymnocorymbus ternetzi

Black Widow Tetra
Black Skirt Tetra
Black Widow Tetra
The Black Widow Tetra, also called Black Skirt Tetra, both because of the extensive black anal fin, is native to the Paraguay River basin in South America. A schooling fish, it can grow to 7cm long.
White Widow Tetra
White Skirt Tetra
White Widow Tetra
The White Widow or White Skirt Tetra is the same species, developed in aquaculture to have a white or pink hue.