nothing
Gills
The respiratory system of a perch involves extracting oxygen from the water. Frogs can extract oxygen from water and air while pigeons and pigs can only breathe in air.
Is a yellow perch a 2nd level consumer
A yellow perch is a species of fish found in North America, Latin name perca flavescens, with a more strikingly yellow colouring than other perch species.
Yellow perch are mainly predatory, feeding on small fish for the most part.
no
Is a yellow perch a 2nd level consumer
The walleye is a perch, related to the yellow perch and the sauger.
Is a yellow perch a 2nd level consumer
The DNA of yellow perch does not differ from human DNA except in the sequences of the bases.
Yes. They eat many species of smaller fishes, including the yellow perch.