How Fish Move Body Form and Locomotion Introduction

How Fish Move Body Form and Locomotion

Introduction Ø Welcome to the ECHO Center! Ø A little about me Ø Introduction to fishes

Overview Ø Welcome to the world of water Ø Why do fish look different from each other? Ø Why do fish swim differently from each other? l l Different habitats Different life strategies

Different Looks Ø Places where they live Ø Jobs they do Photo Courtesy of Tim Nicholson

So how does a fish move? Sandra Edwards Different ways to move Ø Tail and body Ø Fins ( www. nps. gov )

Anatomy of a Fish Ø Paired fins l l Ø Pectoral Pelvic Median fins l l Dorsal Caudal Anal Adipose

Examples of Different Ways to Move Ø Eels moves by making waves with its body Live on the bottom Ø Slow swimmers Ø Duarte

Swimming like a Catfish Ø Ø Ø Versatile and flexible tail Body is thicker near head Tail fin is very variable among different kinds of fish. Fins may aid in turning Includes catfishes, trouts, cods, goldfish, basses, etc. www. northseafish. net

Swimming a little faster Ø Herrings, some tunas, mackerals, trevallys Ø Start to see fins closer to head, deeply forked tail fin, finlets on caudal peduncle. Ø Fins take over in maneuvering. www. mpeda. com

The Fast and Furious To be fast and good at swimming a fish should be/have: Ø Warm-blooded Ø Lunate tail Ø Thick, stiff body near head Ø Strong muscles in tail www. mrmarlin. com

How does a box move through water? Fish shaped oddly use: Tail fin Ø Short caudle peduncle Ø Ø Include porcupine fish, puffer fish, boxfish www. livingreeffishes. com

How would this fish swim? www. divetrip. com

Fin Swimming Modes Ø Use the dorsal, and tail fin to move Ø Hold body straight while moving Ø Other fish: knifefish, bowfin, pipefish. www. divetrip. com

How about this fish?

Wing Flapping Ø Pectoral fins Ø Undulate front to back in rays

Non Swimmers

Crutches www. johneasley. com

Flying www. caribury. com

Drifting

Summary Ø Why fish have different bodies and ways to move Ø How fish move Ø Basic anatomy of fish Ø Four different main modes of moving Ø Oddities

Questions?

THANK YOU!!!!