Create a Crossword Puzzle For Chordates and Fishes

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Across
  1. 4. fin another term for tail fin.
  2. 6. Line System Lateral line system, also called lateralis system, a system of tactile sense organs, unique to aquatic vertebrates from cyclostome fishes
  3. 7. Bladder The swim bladder, gas bladder, fish maw, or air bladder is an internal gas-filled organ that contributes to the ability of many bony fish
  4. 9. (shark) Rhina ancylostoma, the bowmouth guitarfish, shark ray or mud skate, is a species of ray and a member of the family Rhinidae.
  5. 12. Scales Placoid scales are the tiny, tough scales that cover the skin of elasmobranches, or cartilaginous fish—this includes sharks, rays, and other skates.
  6. 14. the upper chamber through which blood enters the ventricles of the heart.
  7. 16. a common cavity at the end of the digestive tract for the release of both excretory and genital products in vertebrates.
  8. 17. Hagfish, of the class Myxini and order Myxiniformes, are eel-shaped, slime-producing marine fish.
  9. 18. Finned Fish is a clade of the bony fish whose members are known as lobe-finned fish.
  10. 19. one of two large chambers toward the bottom of the heart that collect and expel blood received from an atrium towards the peripheral beds within the body and lungs.
Down
  1. 1. a structure that closes or covers an aperture.
  2. 2. Fin each of a pair of fins situated on either side just behind a fish's head, helping to control the direction of movement during locomotion.
  3. 3. commonly known as a "cold-blooded" animal, is one who cannot regulate its own body temperature, so its body temperature fluctuates according to its surroundings.
  4. 5. (shark) Skates are cartilaginous fish belonging to the family Rajidae in the superorder Batoidea of rays.
  5. 7. also called ascidian, any member of the invertebrate class Ascidiacea
  6. 8. Fin an unpaired fin on the back of a fish or whale, the tall triangular fin of a shark or killer whale.
  7. 10. a cartilaginous skeletal rod supporting the body in all embryonic and some adult chordate animals.
  8. 11. an ancient extant lineage of jawless fish of the order Petromyzontiformes, placed in the superclass Cyclostomata.
  9. 13. a group of primitive chordates which were formerly called Amphioxus.
  10. 15. Finned Fish ray-finned fish. Any of various bony fishes belonging to the subclass Actinopterygii, having fins supported by thin bony rays.