fish classification Flashcards
1
Q
chondrichythes
A
- cartilaginous fish
- includes sharks, skates and rays
2
Q
agnathans
A
- lampreys and hagfish
- earliest species of vertebrates
3
Q
osteichthyes
A
- largest class of vertebrates
- bony fish
4
Q
chondrichthyes characteristics
A
- flexible cartilage skeleton
- paired fins
- hard scales
5
Q
oesteichthyes characteristics
A
- have a swim bladder
- paired pectoral and pelvic fins
- have an operculum (protective gill cover)
6
Q
agnatha characteristics
A
- have no stomach
- jawless fish
