2007-02-24 03:12:11 · 6 answers · asked by ri 1 in Science & Mathematics ➔ Zoology
A true fish is a vertebrate.
in invertebrates you have cuttle fish, which is a mollusk, and cray fish which is a crustacean.
But you mention scales, which are characteristics of true fish.
Scales in fishes are of different types: placoid(i sharks), cycloid,cternoid, ganoid( occurring in bony fishes).
2007-02-28 00:47:57 · answer #1 · answered by Ishan26 7 · 0⤊ 0⤋
I agree with the answer that a fish is NOT an invertebrate. It's a vertebrate which means it has a backbone. (Sharks are fish and vertebrates but have a backbone of cartilege not bone.)
a) streamlined body (true of many fish but not all)
b) internal gills (true)
c) oviparous (means egg-laying- true of most fish but many have live babies and don't lay eggs)
d) has scales on body (true)
2007-02-24 06:59:32 · answer #2 · answered by A1973 3 · 0⤊ 0⤋
A fish is not an aquatic invertebrate - it has a backbone, which is pretty much the very definition of being a vertebrate.
2007-02-24 03:49:47 · answer #3 · answered by Anonymous · 0⤊ 0⤋
First of all a fish is an aquatic vertebrate and not an invertebrate.It has all the above mentioned properties.
2007-02-24 18:00:35 · answer #4 · answered by ♦Opty misstix♦ 7 · 0⤊ 0⤋
shark
2007-02-24 03:50:45 · answer #5 · answered by buntyblack 1 · 0⤊ 0⤋
of course it has all these. are u asking?
2007-02-24 03:30:22 · answer #6 · answered by Pious 3 · 0⤊ 0⤋