Fish Vocabulary

5. one of two large chambers toward the bottom of the heart
6. where the digestive, reproductive and urinary systems combine to excrete material
7. a small elongated marine invertebrate that resembles a fish but lacks jaws and obvious sense organs.
8. located where the TAIL FIN at
9. located on the back (top) of most marine and freshwater
11. are located on either side of the fish near the gills.
15. bony fishes belonging to the subclass Actinopterygii, having a fan of bones in their fins.
18. Rod-shaped bones in fins surrounded with thickened layer of muscle
19. is the upper chamber through which blood enters the ventricles of the heart.

1. teeth-like scales that feel like sandpaper; helps to sharks to swim
2. a gas-filled sac present in the body of many bony fishes used to maintain and control buoyancy.
3. a system of tactile sense organs
4. a cartilaginous skeletal rod supporting the body in all embryonic and some adult chordate animals.
10. its habit of contracting its body and ejecting streams of water when disturbed.
12. the cortical structure which forms the lid over the insular cortex
13. There is a large blue-edged, black blotch above each pectoral fin and dark bands between the eyes.
14. one who cannot regulate its own body temperature, So its body temperature fluctuates according to its surroundings.
16. are primitive, jaw-less fish.
17. are rounded to diamond-shaped in form.flat bodies and wing-like pectoral fins attached to their heads.