Vital Functions--Fish

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Across
  1. 2. skeleton For support, fish have _____ made of bones.
  2. 6. Paired fins that work like our arms are _____.
  3. 7. For protection, their bodies are covered in _____.
  4. 8. Some of their fins are in pairs, but others are single.
  5. 9. For _____, they lay eggs in water.
Down
  1. 1. For movement, fish have modified _____ for swimming.
  2. 3. They use gills under water for _____.
  3. 4. Their hearts are divided into two _____.
  4. 5. _____ fins are singular fins found on the fish's back.