![]() ![]() Now that we have determined aquarium fish don’t see in the dark and use neuromasts to detect things instead, the other pressing question would be, do aquarium fish need darkness then, and should you leave your aquarium lights on 24/7 for the fish to feed and play even at night. ![]() Keep reading for more insight on how fish see, and how this affects the way we light freshwater aquariums. This ability then explains how fish “see” or detect other animals underwater, where light penetration is low or at night in the dark.Ī few tropical fish kept in aquariums like elephant nose also have a weak electrical organ on their caudal fin, which they use to locate food in the same way sharks and electric eels do in the wild. Instead, they have rows of pressure-sensitive organs in lateral lines running down each side of their body called neuromasts, which allow them to sense nearby animals from pressure changes in the water column. Well, the straight and simple answer is NO! But there is a caveat.Īquarium fish, whether betta, goldfish, guppies or otherwise don’t exactly see in the dark, at least not with their eyes. Can Aquarium Fish See in The Dark-Do They Need Darkness AQ UA R IA W ISE Can Aquarium Fish See in The Dark-Do They Need Darknessīy Eddie Waithaka the many odd questions aquarists ask is whether aquarium fish can see in the dark. ![]()
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