What is live in water, have fins, most are ectothermic, obtain oxygen thought gills, and have scales.
100
What percent of fishes is bony fish?
What is 95%
200
How do gills work?
What is first they take a gulp of water in through their mouth. Next the water moves through openings in the throat. Finally the water sloshes over the gills and the Gil's take the oxygen into the system.
200
What is one example of a bony fish?
What is goldfish, balloon fish, sea dragon, sockeye salmon etc. (answers may vary)
300
Fishes have a _______ circulatory system.
What is closed.
400
Is the sentence true or false: fins help the fish move and stay balanced it the water when swimming.
What is true
400
Define "swim bladder"
What is an organ, which is an internal, gas-filled sac that helps the fish stay stable at different depths in the water.