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WASHINGTON (Reuters) - While people and other vertebrates are color blind in dim light, some deep-sea fish may possess keen color vision to thrive in the near total darkness of their extreme ...

An international team of scientists recently led a detailed study of eastern rainbowfish, Melanotaenia splendida splendida, a freshwater species that is popular in the aquarium trade. Eastern ...

When winter settles in with prolonged periods of frigid temperatures, wildlife must adapt to survive the severe changes. What happens to fish when winter’s icy grip covers lakes and streams with ice ...

UW researchers ply the waters of an alpine lake in the Stough Basin of Wyoming’s Wind River Mountains as part of their research into the impacts of trout stocking in the once-fishless lakes. Among ...

Cavefish have obvious adaptations such as missing eyes and pale colors that demonstrate how they evolved over millennia in a dark, subterranean world. Now researchers say these incredible fish have an ...

In the fascinating underwater world, gender is far from fixed. Many aquatic animals can change their sex, a unique biological process known as sequential hermaphroditism. This natural adaptation ...

The deep sea, covering approximately 65% of Earth's surface, has long been considered a biological desert. In this extreme environment—particularly in the hadal zone at depths greater than 6,000 ...