Not all fish play by the same reproductive rules. Evolutionary biology reveals how deception became a successful mating ...

For decades, ecologists have known that how a species looks or eats affects its environment. But a new study by researchers at the University of California, Santa Cruz, shows that social behavior ...

While a dominant male fish from northern Mexico mates with a female, a small fella bides his time in the offing. Suddenly, the little guy darts in ahead of Mr. Big and plants his seeds on freshly laid ...

University of Otago—Ōtākou Whakaihu Waka scientists have discovered that it takes mere minutes for a species of sex-changing fish to develop dominant behavior after a change in the pecking order. In a ...

A new study reveals that behavioral isolation between populations of Bahamas mosquitofish is driven primarily by the actions of females—not just through mating choice behaviors, but also through ...

A new study has found that chemical additives in everyday plastic might be stopping – or, at best, interrupting – the reproductive habits of a shrimp-like species that is key to the marine food chain.

Hoeven’s wrasse (Halichoeres melanurus) is one of many species of reef fish that begin adult life as females and later switch to being functionally male. UC Davis researchers have shown that ...

Fish appear to spank their children—and it makes their kids more cooperative in their duties, new research has found. These findings imply that this fish may have more advanced and complex social ...