Educate yourself.

Fish 1b: 1 Mandible, 2 Nasal opening, 3 Eye, 4 Cheek, 5 Operculum, 6 Dorsal Fins, 7 Lateral Line, 8 Caudal Fin, 9 Scales, 10 Anal Fin, 11 Anus, 12 Pectoral Fin, 13 Pelvic Fin, 14 Maxilla, 15 Premaxilla, 16 Upper Jaw