Question

Difference between pisces and aves on basis of breathing

Answer 1

aves breathe O2 from air while Pisces take O2 from water which is in dissolved form

Answer 2

Characteristics of Class Aves:
1. The members of class aves are commonly known as birds. 
2. Their skin is covered with feathers.
3. They breath with their mouth or nostrils.
4. They have four-chambered heart and exhibit high metabolic rate.

Characteristics of Class Pisces:
1. This class include water animals mainly fishes. 
2. Their skin is covered with scales.
3. They respire with the help of gills.
4. They have two-chambered heart and single circulation of blood.