Meanwhile, light gradient data showed blue light was more easily visible in shallow water and red light in deep water. The findings suggest that natural selection in each species' visual system toward ...

Some female fish have eyes for their man only. Colourful African cichlids have evolved into new species because females are partially blind to others. But even as that discovery is made, the species ...

In bony fish the swim bladder primarily serves for buoyancy. Moreover, in many species it also possesses acoustic functions: it plays a role in sound production and improves hearing in numerous ways.

AT FIRST, Ole Seehausen was overjoyed to find the small fish thrashing about in his net last spring. The blue-black cichlid with a saffron tail fin looked like one of the 200 species that biologists ...

This is an old article, reposted from the original WordPress incarnation of Not Exactly Rocket Science. I’m on holiday for the moment, but you can expect a few new pieces here and there (as well as ...