I heard a claim that there is not a fish in existence, that does not have both of these, and I want to see if that is true or not.
2007-05-16 19:40:40 · 5 answers · asked by Zev 2 in Science & Mathematics ➔ Zoology
There are a lot of fish species that do not have scales, but sharks, mackerel and a few other species mentioned here are not species that lack scales. Some of the scaleless fish are: eels, lampreys, catfish, gobies, but all of these species have fins - no vertebrate fish species lack fins entirely. The closest thing to a finless vertebrate fish are the swamp eel and finless snake eels, where the dorsal and anal fins have been reduced to folds of skin that no longer resemble a fin.
2007-05-17 04:20:21 · answer #1 · answered by formerly_bob 7 · 1⤊ 0⤋
Right off the bat I can think of at least two species of fish that have fins and no scales...Sharks and King Mackerel (King fish). They have skin and no scales. I'm sure if I think hard I could probably name some that have no fins, but do have scales. Some sort of sea creature classified as a fish but looks nothing like one... Most deep-sea game fish have skin without scales...Tuna, also.
2007-05-16 19:45:57 · answer #2 · answered by John 4 · 0⤊ 1⤋
Technically speaking, fish have scales and fins. If an animal lacks one or the other, it's not a fish.
The other poster should know better: Sharks are not fish and the King Mackerel certainly has scales.
2007-05-16 19:56:08 · answer #3 · answered by Anonymous · 0⤊ 1⤋
Sharks are fish!
All fish have fins. Most have scales.
They do have scales, they have dermal denticles which are like teeth (literally) covering there body to make them more hydrodynamic. This type of scale is called a placoid scale.
2007-05-16 23:50:58 · answer #4 · answered by lfcmattshark 3 · 0⤊ 0⤋
There are fish with fins and no scales. For example, the catfish has no scales.
2007-05-17 00:41:09 · answer #5 · answered by Anonymous · 0⤊ 0⤋