Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. For any animal, releasing sperm cells requires a bit of time and ...

Life is strange in the deep sea. For the male spotted ratfish — a ghostly relative of sharks, also known as the chimaera — it ...

Perrone Jr., Michael. 1978. "Mate size and breeding success in a mongamous cichlid fish." Environmental Biology of Fishes, 3, (2) 193–201.

JAMESTOWN, St. Helena — Whale sharks shouldn’t be hard for scientists to find. They are enormous — they are the biggest fish in the sea and perhaps the biggest fish to have ever lived. They are found ...