The swim bladder is the organ that keeps the fish balanced and upright, is an internal gas-filled organ that contributes to the ability of a fish to control its buoyancy. It is also known as the gas bladder, fish maw or air bladder.
Actually it is called a balance - scales are in music and on fish.
They have organs called swim bladders, which balance the fish and keep them from floating.
For most fish, the fins help maintain balance while swimming.
a collection of fish is called a school of fish
the fish looses its body balance
It is to balance the fish in the water.
Just a fish.
Fish do not have stones inside their heads. Some fish have small structures called otoliths, also known as ear stones, located in their inner ears that help with balance and orientation in the water.
The flaps on a fish are called fins, which help the fish to maintain balance, steer, and move through water. There are different types of fins on a fish, such as dorsal fins, pectoral fins, pelvic fins, anal fins, and caudal fins.
A baby fish is called fry. A fish egg is called roe.
Newborn fish are called "fry".
The top of a balance scale is called the balance pan or balance platform. This is where the object being weighed is placed for measurement.