Arizona has a few lakes that are worth a visit, but you might reconsider your next swim once you learn about the species that ...

Guiunio rarus, or the rare Guangxi freshwater mussel, was found “living in the slow flowing stream with muddy and sandy bottom” alongside other species, according to the study. The mussels were also ...

Characidium dumonti lives among the rocks and pebbles at the bottom of the fast-flowing streams in the national park, ...

Two new species of fish were discovered in tributaries of the Black Warrior River System in Alabama, according to a study. Photo from Bernie Kuhajda A collection of colorful fish that are crimson ...