Aquarium enthusiasts are often on the lookout for colorful and exciting species that they can raise in their personal tanks. Rainbowfish are a broad category of fish that meet these requirements.

Off the coast of Brazil, a scuba diver captured something remarkable on video: a wrasse fish gripped a mollusk in its mouth, ...

Steelhead are a unique form of rainbow trout ... a few hundred of the iridescent fish make their yearly spawning pilgrimage. The National Marine Fisheries Service listed the southern steelhead as an ...