Class Agnatha
by there behavior and the way they look
the three main groups are that you gey(:
The three main groups in science are chemistry,biology and physics.
Jawless fish, cartilaginous fish, and bony fish.
Three basic fish groups: Cartilaginous Fish - Chondrichthyes Fay-Finned Fish - Actinopterygii (over 23,000 species) Lobe-Finned Fish - Sarcopterygii
nincompoop
To narrow it down to three groups, it would be strings, winds, and percussion.
It has three main groups.
The three major groups of fishes are:Jawless Fishes-have no jaw, but a roundmouth, a tube like body made of cartilage (flexible, like your nose), no scales; have slimy skin. Examples: lamprey and hagfish (google them).Cartilaginous Fishes-skeleton made of cartilage, movable jaws, have scales. Examples: sharks, skates and rays.Bony Fishes-skeleton made of bone, 95% of all fish species, covered by bony scales, have a swim bladder (helps fish keep balance), reproduce by external fertilization called spawning; some species have internal fertilization. Examples: perch, bass, northern pike, salmon, and goldfish.Thanks to SIS for the Life Science notes, taken on Friday, May 21st.-sylvesterrose12
star fishes live in alone and in groups
There are three main groups: Igneous, Sedimentary, and Metamorphic.
a school, or a shoal