This document provides an overview of fish morphology and anatomy. It describes the basic body divisions of head, trunk, and tail. It then discusses various body shapes and tail types that influence how fish move and live. These include elongated, compressed, rounded, and forked tail shapes. It also covers scale types, mouth positions, coloration strategies for camouflage and defense, and schooling behavior. The goal is to understand how fish body forms relate to their environment and lifestyle.

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

11. Oban Skates Stingray

15. 5. Compressiform fishes Angelfish Yellow-faced Angelfish Holacanthus bermudensis

17. Spotted gar barracuda

23. Salmon

28. Morphology: Fin type

35. Truncate tail killifish

37. minnow Forked tail

41. Swordfish ( Xiphias gladius ) Black Marlin ( Makaira indica )

49. 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

62. Reproductive types