Thayeriinae

species of fish

Thayeria is a genus of freshwater ray-finned fishes belonging to the family Acestrorhamphidae, the American characins. The fishes in this genus are found in the Amazon Basin, and the Approuague and Maroni Rivers in tropical South America. It includes three species, including the blackline penguinfish, T. boehlkei. Members of this genus, among other characteristics, are small, have one lateral black stripe, and have a vesica piscis shape. They are peaceful.

Rachoviscus is a genus of freshwater ray-finned fishes belonging to the family Acestrorhamphidae, the American characins. These threatened fish are endemic to coastal river basins in Bahia, Paraná and Santa Catarina in eastern Brazil.

Parapristella is a genus of freshwater ray-finned fishes belonging to the family Acestrorhamphidae, the American characins. The fishes in this genus are found in northern South America.

Hollandichthys is a genus of freshwater ray-finned fish belonging to the family Acestrorhamphidae, the American characins. The fishes in this genus are endemic to rivers and streams in southern and southeastern Brazil from Rio Grande do Sul to Rio de Janeiro. These are small fish that reach up to in standard length.

genus of fishes