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The rose-veiled fairy wrasse is the first Maldivian fish to be described by a local scientist. Pictured: a male rose-veiled fairy wrasse Yi-Kai Tea/Californa Academy of Sciences Deep in the waters off ...

Among aquarium enthusiasts who keep bettas, it is usually the male fish that are known as the "colorful ones." Oftentimes the males are favored over the females not only for their color, but also ...

You can see right through this little aquarium fish from Thailand: Its skin is almost completely transparent. But when the light hits it just right, its body flickers with shimmering rainbow colors.

With shiny, multi-colored scales, Rainbow Fish is the most beautiful fish in all of the ocean, and the only one of his (or her!) kind. When Rainbow Fish refuses to share his vibrant, shimmering scales ...