With all of todays technology and all the specilized breeding and conditioning they can do, why is it that deep sea fish cannot be kept alive in salt water aquariums? I mean, through generations they bread puffers that do not require salt, is it not possible through generations to breed an angler fish that can survive in far less pressure than what would be natural to them? Id kill to see a gulper eel in a giant salt water aquaruim!!!