Sensory organs of aquarium fish

Have you ever wondered how your fish communicate with each other? Do aquarium fish have olfactory organs? You will find all the answers to these questions in today's post.


It turns out that freshwater friends have highly developed senses, and these are differently  developed in individual species. So let’s take a look at fish eyesight first.


As reported in the aquarium technical literature - the eyes are one of the best developed organs of the body of underwater vertebrates. It turns out that very well-developed eyeballs in fish inform their brain about all the qualities of the surrounding world - colors, shapes and movements. It is surprising that the depth of color in fish is probably much better developed than in humans. They do not need any vitamins for eyesight or a supplement to improve eyesight. After all, there are many factors related to the ability to perceive - some fish, thanks to their eyesight, change their body color depending on the surrounding environment.


What about taste and smell? I don't think I should surprise you if I say that these are equally well developed. The unit that perceives the smell is the olfactory fovea, thanks to which the fish is able to recognize, for example, a dead individual, and then escape from the place of danger.


Fish have no voice? Most of the fish we know do certainly not. However, freshwater aquaristics has registered the fact that in some species there are audible tones that are perceived by the organ of hearing of the fish and mainly of the lateral line of its body. Hearing, however, has marginal importance for fish and is not as perfectly developed as sight.


As you can see, fish have very well developed sensory organs. Remember about it when your next guest will knock on the glass to say ‘hello’ to inhabitants of your tank :) Stress is not welcome there!