1. Amphibians has moist slimy skin meanwhile fish has scales. 2. Fish uses gills for breathing, but amphibians are different. Young ones uses gills, but adult amphibians uses lungs and even skin for breathing. Examples of amphibians include frogs and toads. Both fish and amphibians are one of the 5 types of vertebrates under animals. Besides fish and amphibians, other vertebrates includes mammals, reptiles and birds.
Frogs, toads, salamanders, and caecilians are all amphibians. Amphibians live most of their time both in and out of the water while fish live all their time in the water. Amphibians breathe mostly through their lungs whereas fish must breathe using gills (except lungfishes). Amphibians have skin whereas fish have scale covered skin.
Answer - B Fish and reptiles both are ectothermic but fish have gills and reptiles have lungs. Ectothermic organisms do not have an internal mechanism of regulating their body temperature and are dependent on their atmosphere for temperature regulation. Fish, reptiles and invertebrates are examples of ectothermic organisms.
