Jawless Fish

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Across
  1. 4. organ in jawless fish with two chambers
  2. 6. Found in Class Myxine
  3. 7. What phylum are jawless fish in
  4. 11. jawless fish body temperature depends on its surroundings
  5. 12. jawless fish lack paired ____
  6. 14. Their anatomy becomes simpler as they age
  7. 16. Have a large sucker-like mouth
  8. 17. Lives in the ocean but travels to freshwater
  9. 18. lampreys are invasive here
  10. 19. Meaning jawless fish eat mostly dead animals
Down
  1. 1. Lampreys have seven pairs of these
  2. 2. Lampreys are an example
  3. 3. Hagfish live in ___ waters
  4. 5. Jawless fish have none
  5. 8. Type of fertilization jawless fish use
  6. 9. Hagfish secretes this
  7. 10. Hagfish skin is used for this
  8. 12. How many millions of years ago have jawless fish been alive
  9. 13. jawless fish have one of these
  10. 15. Lamprey larvae lack these