Catfish

... any modification at all; there are many species of fish that are quite capable of moving across dry land, such as mudskippers and some species of catfish. So the idea that a species adapted to one environment would have to be incapable of surviving in another is quite simply untrue. It comes down ...

See entire post

... with your reasoning is that we already know how lungs evolved as an off-shoot of the intestine. As I mentioned before, many fish ( Corydoras catfish, for example) can swallow air from the water's surface and absorb oxygen through their intestinal lining. Lungs evolved as a chamber of the ...

See entire post

... with your reasoning is that we already know how lungs evolved as an off-shoot of the intestine. As I mentioned before, many fish ( Corydoras catfish, for example) can swallow air from the water's surface and absorb oxygen through their intestinal lining. Lungs evolved as a chamber of the ...

See entire post

... read up on Tiktaalik: http://en.wikipedia.org/wiki/Tiktaalik FYI, lungs evolved before legs as an off-shoot from the intestine; in fact Corydoras catfish today can "breathe" through their intestinal lining as an adaptation to life in poorly-oxygenated water. Lungs were probably very ...

See entire post

... : http://en.wikipedia.org/wiki/Tiktaalik FYI, lungs evolved before legs as an off-shoot from the intestine; in fact Corydoras catfish today can "breathe" through their intestinal lining as an adaptation to life in poorly-oxygenated water. Lungs were probably very ...

See entire post