black tetra

The black tetra (Gymnocorymbus ternetzi), also known as the petticoat tetra, high-fin black skirt tetra, black skirt tetra, black widow tetra and blackamoor, is a species of freshwater ray-finned fish belonging to the family Acestrorhamphidae, the American characins. It is native to the Paraguay River basin of south-central Brazil (mainly Pantanal region), Paraguay and northeast Argentina, but there are also populations in the upper Paraná and Paraíba do Sul Rivers that likely were introduced. It was formerly reported from the Guapore River, but this population is part of G.

Le genre Gymnocorymbus ne concerne que trois espèces de poissons américains de la famille des Characidés.

Gymnocorymbus thayeri es una especie de pez de la familia Characidae en el orden de los Characiformes. Morfología Los machos pueden llegar alcanzar los 5 cm de longitud total. ​ Hábitat Vive en zonas de clima tropical entre 23 °C - 27 °C de temperatura.