Fish Quiz

1. In seahorses, which parent carries the developing embryos in a brood pouch?

2. A fish waits beneath an overhanging branch, then shoots a jet of water to knock an insect into the water. Which species is displaying this behavior?

3. Which species is a fish rather than a marine mammal?

4. A freshwater fish has prominent whisker-like barbels around its mouth and smooth skin without obvious scales. Which fish is it most likely to be?

5. A freshwater fish's body fluids contain more dissolved substances than the surrounding water, so water continually enters its body. Which response helps maintain its water balance?

6. A small reef fish with a strong blue-and-black stripe performs a dance before removing parasites from visiting fish. Which species best matches this cleaning specialist?

7. A fish must sustain fast swimming through open water. Which body shape would best reduce drag?

8. On a coral reef, you see a fish using fused, beak-like teeth to scrape algae from hard surfaces. Which fish is the best match?

9. In which fish does the male characteristically carry fertilized eggs in his mouth until the young hatch?

10. You observe a bottom-dwelling fish with a flattened body and both eyes on the same side of its head. Which fish best matches the description?

11. A small fish has a modified suction disc on top of its head and uses it to travel while attached to larger marine animals. Which fish is it?

12. An adult salmon leaves the ocean and travels into freshwater to reproduce. What is this migration pattern called?

13. A diver sees a flattened fish whose broad pectoral fins merge visually with its head and whose gill openings are underneath. Which fish group best fits?

14. A jawless, eel-shaped fish uses a circular suction-cup mouth to attach to other fish. What is it?

15. When threatened, which fish is known for swallowing water and greatly expanding its body?

16. What mainly allows clownfish to live among the tentacles of a host sea anemone?