fish are not so restricted in their movements (they do not have to jump to get the cereal off the top shelf in the pantry).
fish do not drown, nor cremate, in their natural environment. (a hurricane blows and they can swim below, maybe ride the waves out overhead.)
fish do not poison their gills with the words that they speak the way that humans breathe from the same sin-tainted orifice they eat, smoke, lie, and choke.