External Morphology Basics

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Presentation transcript:

External Morphology Basics Caudal Peduncle Operculum Lateral Line

Body Shape Fusiform, Terete, Cyllindrical Compressiform, Compressed Depressiform, Depressed Anguilliform, Eel-like Figure from Biology of Fishes, Bond

Mouth Position Inferior Subterminal Superior Terminal Figure from Biology of Fishes, Bond Superior Terminal

Caudal Fin

Caudal Fin Truncate Emarginate Rounded Forked Lunate

Fin Placement Pectoral fins of more primitive fishes are generally lower on the body and have a more horizontal base. More primitive fishes have abdominal pelvic fins. More advanced fishes have thoracic or jugular pelvic fins. Figure from Biology of Fishes, Bond

Scales PLACOID GANOID CYCLOID CTENOID

Scales?