So we moved my bros 20 gallon last night. He had 2 frogs, 4 neon tetras, and various livebearer fry. Not the word had. 80 percent water change so we could pick it up and he forgot prime! In less than an hour ALL 4 neons where dead as door nails and NOBODY looked happy! However today most (if not all) the fish recovered (obviously not the neons). So lesson? Dont forget the prime! Fun Fact? Livebearers are tougher than neon tetras. As are ADFs...