For students to be able to fish on their own with no major problems. Perch Fish swim by alternating contracting muscle groups on either side of body, in a wave like motion. 2 groups . . . A fish stays a float by use of a swim bladder which is a structure that is filled with gases and helps the fish keep a float in the water. Fish have fins for locomotion.
Fish have scales for protection, they regrow if lost.
The age of a fish can be found by the annual growth rings created by the scales. As a fish gets older its scales thicken. The lateral line helps a fish find its way in the night. Explain to the kids how to cast a fishing pole. Describe the parts of the fishing pole.