Difference Between Amphibians and Fish

[n321]

From Merriam-Webster dictionary:

Fish--any of numerous cold-blooded strictly aquatic craniate vertebrates that include the bony fishes and usually the cartilaginous and jawless fishes and that have typically an elongated somewhat spindle-shaped body terminating in a broad caudal fin, limbs in the form of fins when present at all, and a 2-chambered heart by which blood is sent through thoracic gills to be oxygenated

Amphibian--an amphibious organism; especially: any of a class (Amphibia) of cold-blooded vertebrates (as frogs, toads, or salamanders) intermediate in many characters between fishes and reptiles and having gilled aquatic larvae and air-breathing adults

This goes into the heart differences in more depth:
The Vertebrate Animal Heart: Unevolvable, whether Primitive or Complex

Sorry, just realized that website is just a bit biased/propaganda-ish
I don't mean to go into an evolution/intelligent design discussion, I just thought the differences in heart structure was interesting...

[arielgasca420]

this was an interesting post. I am glad I read it entirely. Most of the animals you mentioned, like lungfish, I did not know existed. (i am more of a plant fanatic)