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.
        
                    
             
        
        
        
They are called stomata and stoma in singular form 
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The muscles moved quickly to defend themselves against this new predator by thickening their shells
        
             
        
        
        
The answer is true I’m glad to help!