Lecture 11 Flashcards
1
Q
What are polypteriformes?
A
Elongated fish with a unique series of dorsal small fins which vary in number from 7 to 18.
The body is covered in thick ganoid scales.
They have 4 pairs of gill arches
2
Q
What are characteristics of Rover predators (fish)?
A
Fusiform bodies Pointed heads Terminal mouths Narrow tail base Forked tail fins Actively chasing preys Continuous swimming
3
Q
What are characteristics of Ambush predators (fish)?
A
Streamline bodies Flat heads Large toothed mouths Narrow tail base Large tail fins Dorsal and anal fins situated far back Surprising prey Fast swimming
4
Q
What are characteristics of surface-orientated dwellers?
A
Small bodies
Flat heads
Dorsally directed mouths
Large, often dorsally facing eyes
5
Q
What are characteristics of bottom dwelling fish?
A
Flat or compressed bodies
Very small subterminal mouths or very large gaping mouths
Small eyes
6
Q
What are characteristics of Reef dwellers?
A
Short compressed bodies Pectoral fins high on the body Pelvic fins below pectoral fins Long dorsal finals anal fins Large eyes Short snouts
7
Q
What are characteristics of agile hunters (fish)?
A
Very long bodies Stout heads Tapering or rounded tails Very long dorsal and anal fins Paired fins small or absent
