osteichthyes Flashcards
1
Q
habitat
A
marine and freshwater
2
Q
developement and fertilisation
A
direct and external and are oviparous
3
Q
are they warm blooded
A
they are too poikiltherms ie cold blooded animals
4
Q
body structure
A
they have bony endoskeleton, and streamlined bodyand their mouth is terminal, they have presence of operculum and they have ctenoid/ cycloid scales
5
Q
how is buoyancy maintained
A
they have airbladders present
6
Q
how many chambered heart do they have
A
its 2 chambered one auricle and one ventricle
7
Q
examples
A
exocoetus [flying fish], catla [katla], hippocampus [ sea horse], labeo[ rohu] , clarias [magur], betta [ fighting fish], pterophyllum [angel fish]
