KEY CONCEPT Bony fish include ray-finned and lobe-finned fish.

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Presentation transcript:

KEY CONCEPT Bony fish include ray-finned and lobe-finned fish.

Ray-finned fish have a fan of bones in their fins. Ray-finned fish have fins supported by a fan-shaped array of bones. embedded in a thin layer of skin and connective tissue light, collapsible, and easy to move

Ray-finned fish have a variety of body plans. long torpedo-shaped bodies (barracuda)

Ray-finned fish have a variety of body plans. flattened bodies (plaice)

Ray-finned fish have a variety of body plans. elaborate camouflage (sea dragon)

A swim bladder helps a fish float higher or lower in the water.

Some ray-finned fish have both lungs and gills. can breathe air and survive out of water for several hours at a time example: bichir found in West Africa

Lobe-finned fish have paired rounded fins supported by a single bone. Lobe-fins are paired pectoral and pelvic fins that are round in shape. not as maneuverable as ray-fins able to support weight lobe fin

Only seven species of lobe-finned fish exist today. coelacanths lungfish