Freshwater soles are all pretty similar in appearance. They are obviously very flat, but do notice that the compression is different to that of a freshwater stingray, flounders and soles are compressed laterally, like an angelfish or discus, except they swim with one side (called the blind side) towards the bottom of the tank. As a result, the left and right sides of their bodies, at least from the perspective of someone looking at them from the top, are not symmetrical. In fact, their whole body morphology is really weird: the fins on the edges of the body are enormously elongated dorsal and anal fins; the mouth opens on one side of the head; and the eye that should be on the blind side of the body is on the top side, putting both eyes next to one gill opening.