25.3 A Closer Look at Bony 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
25.3 A Closer Look at Bony Fish
• Ray-finned fish have a variety of body plans.– long torpedo-shaped bodies (barracuda)
25.3 A Closer Look at Bony Fish
• Ray-finned fish have a variety of body plans.– flattened bodies (plaice)
25.3 A Closer Look at Bony Fish
• Ray-finned fish have a variety of body plans.– elaborate camouflage (sea dragon)
25.3 A Closer Look at Bony Fish
• A swim bladder helps a fish float higher or lower in the water.
swim bladder
25.3 A Closer Look at Bony Fish
• 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
25.3 A Closer Look at Bony Fish
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
Top Related