Knodus Knodus borki Blue tetra Curuá River (Iriri River tributary) Stanley Howard Weitzman Bryconops tocantinensis Mimagoniates microlepis Bryconamericus Astyanax chaparae Tetra Characidae List of aquarium fish by scientific name List of critically endangered fishes List of least concern fishes List of vulnerable fishes IUCN Red List data deficient species (Chordata) List of data deficient fishes IUCN Red List critically endangered species (Animalia) IUCN Red List vulnerable species (Animalia) List of freshwater aquarium fish species