Difference Between Amphibians and Fish

[Namio]

Here's my own quote:

In addition to what Macle said, amphibians do not have scales like most fish do.[...] I'll also state the obvious that no fish have limbs with digits like most amphibians do.

Another thing, caecilians lack limbs completely, so...

Haha, good call! I agree, that's why I put a "most" in front of amphibians.

Also, do ALL fish have scales? It seems like some eels lack scales...

Another good call, so I did the same thing with fish.

[n321]

I was thinking that there aren't any amphibians with fins (although not all fish have true fins either...).

[Namio]

I was thinking that there aren't any amphibians with fins (although not all fish have true fins either...).

That is true, but aquatic salamanders have dorsally flattened tails that work just like a fin for swimming

[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)