Fish Intro Flashcards
1
Q
What are the four cartilaginous fish
A
- Chimaera
- Sharks
- Sawfish
- Rays
2
Q
How many fish species
A
20,000 - 30,000
3
Q
Bony species number
A
24,000 - 25,000
4
Q
Fish are ectothermic, with the exception of
A
Tuna and some sharks
5
Q
Fish bodies are streamlined for efficient motion. This shape is known as….
A
Fusiform
6
Q
Segmented, paired muscular blocks that extend thru the trunk and tail
A
Myomeres
7
Q
Alternate contractions of the myomeres cause _____ curves
A
S shaped
8
Q
S shaped curves caused by myomeres move ______ thru the body and cause _______ motion
A
move caudally
forward motion
9
Q
Which fin causes propulsion, thrust, and allows fish to change direction
A
Caudal (tail)
10
Q
Which three fins are considered stabilizers?
A
Pectorals, Pelvic, Dorsal, and Anal
