Match each characteristic with the correct animal group. 1. fish
gills, then lungs
2. amphibians
scales and shells
3. reptiles
feed milk to young
4. birds
most can fly
5. mammals
scales and gills

The table below shows data for a population of fish in a pond. fish body color # of fins scales? tail shape a silver 4 yes fan b pink 4 yes flat c black 4 yes fan d orange 4 yes flat e orange 4 yes fan f silver 4 yes flat which of the above characteristics would be most in developing a classification system for the fish? a. body color and tail shape b. presence of scales and tail shape c. body color and number of fins d. number of fins and presence of scales