NEET BIOLOGY

Detailed explanation-1: -Fish are aquatic vertebrates. They make up more than half of all vertebrate species. Many structures in fish are adaptations for their aquatic lifestyle. Fish have gills that allow them to breathe oxygen in water.

Detailed explanation-2: -Fishes are finned aquatic vertebrates. They have scales, an interior skeleton, and breathe by passing water over their gills (aquatic respiration). Some examples of fish include trout, stingrays, and sharks.

Detailed explanation-3: -Fish Have Fins, Scales and They Breathe Through Gills.

Detailed explanation-4: -The two animals which breathe through gills are Octopus, Shark, and Fish.

Detailed explanation-5: -Fish breathe through their gills. Gills are respiratory organs full of blood vessels. A fish breathes by taking water into its mouth and forcing it out through the gill passages. As water passes over the thin walls of the gills, dissolved oxygen moves into the blood and travels to the fish’s cells.