Fish Morphology

Fish Morphology (bony fishes) By: Geonyzl L. Alviola

Introduction ,[object Object],[object Object]

Body Divisions ,[object Object],[object Object],[object Object],[object Object],[object Object]

The caudal peduncle ,[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],Fishes were described and classified by :

Body shape ,[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],2. Long and Skinny or F iliform American Eel Snake eel

3. oval or fusiform ,[object Object],[object Object],Black fin tuna Largemouth bass photo © Brian Jorg

4. compressiform ,[object Object],[object Object],[object Object],[object Object]

5. Compressiform fishes Angelfish Yellow-faced Angelfish Holacanthus bermudensis

[object Object],[object Object],6. Sagittiform

8. Globiform ,[object Object]

Anguilliform ,[object Object]

Another way to classify body types is by their function. In this system: ,[object Object]

[object Object],[object Object]

Pectoral fins: ,[object Object],[object Object]

Pelvic fin location: ,[object Object],[object Object],[object Object]

Caudal fin shape: ,[object Object],[object Object]

B. The heterocercal tail ,[object Object],[object Object],[object Object]

Fish Tail indicates how the fish moves and lives as well. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

2. Forked Tail ,[object Object],[object Object]

3. Round Tail ,[object Object],[object Object],Round tail Clown fish

4. Emarginate ,[object Object],[object Object]

5. Lunate or crescent ,[object Object],[object Object],[object Object],[object Object],[object Object]

Swordfish ( Xiphias gladius ) Black Marlin ( Makaira indica )

Morphology: Scale type ,[object Object]

Ganoid ,[object Object],[object Object],[object Object]

Placoid ,[object Object],[object Object]

Cycloid ,[object Object],[object Object]

Ctenoid ,[object Object],[object Object]

Mouth Shape (1) long, skinny bill (tweezer like)-poking into crevices (2) large mouth -swallowing/tearing large prey (3) beaklike mouth -used to graze on small algea growing on hard surfaces (4) downward -orientated mouth-useful to suck food up from bottom (5) upward-orientated – usually feed at the water surface

Morphology: Mouth type ,[object Object],[object Object]

2. large mouth ,[object Object]

3. beaklike mouth ,[object Object],Parrot fish

4. Downward ,[object Object],Janitor fish

5. long, skinny bill ,[object Object],[object Object]

Defense Strategies ,[object Object]

[object Object],Basslet firefish

[object Object],Four Eye Butterfly Fish.

[object Object],Porcupine fish

Fish Morphology

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