What Keeps A Fish Upright?

What Keeps A Fish Upright? A: Many bony fish, like the fancy goldfish found in ornamental ponds, have an organ called a swim bladder. This gas-filled sack has two main purposes: It helps the fish control its buoyancy and remain at a particular depth without having to waste energy on swimming, and it keeps the

Can Fish Swim Sideways?

Can Fish Swim Sideways? Positive buoyancy disorder, where the fish floats at the surface or on its side, is the most commonly presented form of swim bladder disease, especially in goldfish. Most likely, the cause is overinflation of the swim bladder. Can a fish swim vertically? A fish swimming vertically, nose-down, can mean one of