Why are there so many species of beetles and so few crocodiles?

There are more than 400,000 species of beetles and only two species of the tuatara, a reptile cousin of snakes and lizards that lives in New Zealand. Crocodiles and alligators, while nearly 250 million years old, have diversified ...

Tilapia feed on Fiji's native fish

The poster child for sustainable fish farming -- the tilapia -- is actually a problematic invasive species for the native fish of the islands of Fiji, according to a new study by the Wildlife Conservation Society and other ...

Fish study turns colour vision theory inside out

(PhysOrg.com) -- Neurobiologists at the Queensland Brain Institute have found that animals are not always as brightly coloured as they seem - at least not to their counterparts.

Genetic conflict in fish led to evolution of new sex chromosomes

University of Maryland biologists have genetically mapped the sex chromosomes of several species of cichlid (pronounced "sick-lid") fish from Lake Malawi, East Africa, and identified a mechanism by which new sex chromosomes ...

Cichlid fish: How does the swim bladder affect hearing?

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. Biologists around Friedrich ...

B chromosomes affect sex determination in cichlid fishes

B chromosomes have a functional effect on sex determination in a species of cichlid fishes from Lake Victoria, according to a study by Japanese researchers to be published in open-access journal PLoS Genetics on August 18th, ...

page 2 from 6