By Gustavo Faleiros The background was right for the announcement of the bad news. Fish swam in a wall-sized tank that framed ...

Catfish are a diverse group of ray-finned fish. Public Domain image, CC3.0. Catfish are a diverse group of ray-finned fish. Public Domain image, CC3.0. Large migratory catfish, such as piramutaba ...

Lesley de Souza never expected the species of catfish she was searching for to be served up to her on a platter—but then she got to dinner. The Field Museum conservation biologist spent her days ...

No one knows just how many species live in the Amazon rainforest--scientists estimate that it's home to one-third of the world's animal and plant species. There are still thousands out there waiting ...