A biologist at Washington University in St. Louis has shown that for some fish species, females prefer males with larger sexual organs, and actually choose them for mating. That does not exclude males ...

In many fish species body size plays an important role in sexual selection. Large individuals are preferred mating partners because they can enhance offspring survival by providing better quality ...

NEWPORT, Ore. – A new study of the genetic profiles of wild and hatchery coho salmon demonstrates important distinctions in how the two types of fish form mating pairs. These findings by Oregon State ...

In a new meta-study, experts have published ground-breaking findings on the effects of climate change for fish stock around the globe. Because fish that are ready to mate and their young are ...

Residents of Tampa, Florida have reported hearing strange noises coming from the bay for years, and now scientists believe it may be fish mating — very loudly, according to reports. The deep, ...