External
- Eyes
- Fins- dorsal (stability), pelvic (stability), pectoral (side to side movement), caudal (propels), anal (stability)
- Lateral line
- Operculum and Gills
Internal
- Liver
- Heart (atrium and ventricle)
- Swim bladder- controls buoyancy
- Mouth, Pharynx, Esophagus, Stomach (snails!), Intestine, Anus
- Brain and large Optic nerves
Diet
- Snails
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