Mouth morphology diversity in fish, sharks, and lampreys. 1. northern anchovy (Engraulis mordax); 2. peacock flounder (Bothus lunatus); 3. white sturgeon (Acipenser transmontanus); 4. yellow seahorse (Hippocampus kuda); 5. Chinese sucker (Myxocyprinus asiaticus); 6. bobtail snipe eel (Cyema atrum); 7. secretary blenny (Acanthemblemaria maria); 8. tiger shark (Galeocerdo cuvier); 9. pebbled butterflyfish (Chaetodon multicinctus); 10. blackspotted wrasse (Macropharyngodon meleagris); 11. clown triggerfish (Balistoides conspicillum); 12. swordfish (Xiphias gladius); 13. sockeye salmon (Oncorhynchus nerka); 14. king mackerel (Scomberomorus cavalla); 15. sea lamprey (Petromyzon marinus); 16. paddlefish (Polyodon spathula); 17. red-bellied piranha (Pygocentrus nattereri); 18. longnose gar (Lepisosteus osseus); 19. minnow (Culter alburnus); 20. catfish (Ancistrus triradiatus); 21. pelican eel (Eurypharynx pelecanoides); 22. Krøyer's deep sea anglerfish (Ceratias holboelli); 23. bicolor parrotfish (Cetoscarus bicolor); 24. green moray (Gymnothorax funebris).

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