1. CLASS OSTEICHTHYES

4. are taxonomic group
of fish that have bone
in their skeletons.
It is the largest class of
vertebrates in
existence today.

5. A skeleton of bone
Scales
Bony operculum covering
the gill openings
Lungs or a swim bladder

6. Osteichthyes
are primitively
ectothermic
(cold blooded)

10. Actinopterygii
the ray-finned fish
Sarcopterygii
lobe-finned fish

12. contains fishes that
are sometimes called
the ray-finned fishes
because their fins lack
muscular lobes.

13. They usually possess
swim bladders, gas-
filled sacs along the
dorsal wall of the
cavity that regulate
buoyancy.

17. have muscular lobes
associated with their
fins and usually use
lungs in gas
exchange.

22. Some bony fishes
are hermaphrodites, and a
number of species
exhibit parthenogenesis.
Fertilization is usually
external, but can be
internal.

23. Development is usually
oviparous (egg-laying) but
can be ovoviviparous, or
viviparous.
Although there is usually no
parental care after birth,
before birth parents may
scatter, hide, guard or brood
eggs,

26. Prepared by:
Glory Fie P. Betonio
BSED II- Bio. Sci.