Fish 3 Flashcards
1
Q
What are the two subgroups of Sarcopterygian?
A
- Coelacanth
* Dipoans.
2
Q
What are the two sub groups of actinopterygians?
A
- Chondrostei
* Neopterygii.
3
Q
What are the two main lineages of bony fish?
A
- Sarcopterygian: lob finned fish ‘fleshy fin’
* Actinopterygian: ray finned fish.
4
Q
Define Osteichthyes.
A
Bony fish.
5
Q
Describe the swim bladder.
A
- Present only in bony fish
* Help to keep fish afloat.
6
Q
Define iteraparous.
A
Reproduce multiple times during life.
7
Q
Define semelparous.
A
Fish reproduce once.
8
Q
Define catadromous.
A
Juvenile stage in salt water, adults grow in freshwater e.g. Eels.
9
Q
Define anadromous.
A
Juvenile stage in freshwater, adult in saltwater e.g. Salmon.
