A new study offers insight into a process that could lead one species to diverge into two, researchers report in the American Naturalist.
Fish just want to have fun, according to a University of Tennessee, Knoxville, study that finds even fish "play."
Male stickleback fish that protect their young have bigger brains than counterparts that don't care for offspring, finds a new University of British Columbia study.
A team of scientists, including Museum fish researcher Dr Ralf Britz, have discovered that in one genus of fish the swimbladder, the organ used for buoyancy in water, is greatly enlarged in the males.
A plentiful supply of yellow perch was once available in the U.S. Great Lakes region, but that changed in the 1990s. Populations of this Midwest fish-fry favorite dropped dramatically due to the invasion of the zebra mussel, ...
The UPV/EHU's Cell Biology in Environmental Toxicology group has conducted research using thick-lipped grey mullet and has analysed specimens in six zones: Arriluze and Gernika in 2007 and 2008, and since then, Santurtzi, ...
Male stickleback fish are bolder and more willing to take risks than females, say scientists.
(Phys.org) —In Lake Malawi, East Africa, there are around 200 different species of cichlid fish that once or twice a year build large sand structures (known as bowers) on which the fish mate. Each different species constructs ...
(Phys.org) —When predators lurk nearby, male Bahamas mosquitofish (Gambusia hubbsi) change mating strategies, rejecting elaborate courting rituals for more frequent and sometimes forceful encounters with females.
When it comes to sex among guppies, competition is high for those at the top of the game. To get around this predicament, a recent study has shown, guppies use trickery.