MassWildlife biologists caught a fish on the Connecticut River with a rare genetic mutation that dramatically changes its ...

In Hungary, ethological research is most often identified with tests on dogs, but novel methodological advances could bring another species, the paradise fish, into the spotlight. Fish are easy to ...

Imagine you are a kind of fish called a goby, part of a huge family of more than 2,000 species. Maybe you're of average size for a goby, about three to four inches long. Your longest relative is about ...

DNA of rare Chinese bahaba found in Hong Kong waters last September, a month after about 1,300 hatchery-reared juveniles ...

Can a small fish help identify possible treatments for an ultra-rare inherited disease found in an Alabama boy? The genetic disease is XMEA, which progressively weakens the muscles and can affect the ...

Fish present an extraordinary range of physiological adaptations shaped by their aquatic environments and evolutionary history. As ectotherms, their metabolic rates, cardiovascular performance and ...

Interactions between farmed and wild fish influence the evolutionary trajectories of natural populations and the sustainability of aquaculture. Domestication in controlled environments selects for ...

Researchers discover surprisingly high levels of genetic diversity among the colorful male morphs of a freshwater fish. Fish Species’ Y Chromosomes Diverged Even Without Recombination Fish Species’ Y ...

The rapid formation of 500 different species of fish in a single lake, each with specialized ecological roles, resulted from a small but genetically diverse hybrid population. Scientists show the ...