The human genome is also an interesting point of comparison in that our genome has roughly 20,000 protein-coding genes. And these fish, with up to 30 times as much DNA... also have about 20,000 ...

An international team of researchers has sequenced the genome of a South American freshwater fish, Lepidosiren paradoxa, revealing that it possesses the largest animal genome ever discovered.

And worse, the Java stingaree is the first marine fish considered to have gone extinct due to human activity. This was a seismic bit of news, and not uncontroversial. "It is a really big call ...

As for the mystery of the larger female, its solution is quite simple: about 90 per cent of the oxygen fish get from their gills is used for various activities and only the rest for growth. Thus, by ...