1. A common trait between tadpole and fish is
2. This has a cartilaginous endoskeleton
3. True fishes have fins and gills This is not a true fish
4. This fish shows dorsal fin modified into suckers
5. This is a living fossil
6. This is a migratory fish
7. The distinguishing factor between rays and sharks are
8. Type of association between shark and suckerfish is
9. Placoid scales are found in
10. This is a characteristic feature of fishes