Dorsal fin

Bin attached to the dorsal surface, that is to say to the upper profile of the fish.

The dorsal fin is a fin located on the back of certain fish, which allows them to propel themselves into the water and maintain their balance. It is generally made up of rigid rays and can be present in most fish, although its shape and size vary depending on the species.

The dorsal fin is generally located vertically the body of the fish, just behind the head, and it can be more or less far back depending on the species. It can be more or less large and more or less, and can have different shapes, ranging from a right and smooth fin to a pleated and wavy fin.

In some fish, the dorsal fin is particularly developed and can be used as a defense body against predators. It can also be used as a communication organ, being noted or lowered depending on the intentions of the fish.

The dorsal fin is generally made up of rigid rays which are covered with thorny fabric or bone plates. It is connected to the body of the fish by a membranous fabric and can be mobility thanks to muscles that allow it to be lifted or lower it.

The fish use their dorsal fin to move around in water and to maintain their balance. When they swim, they beat their dorsal fin from top to bottom, which allows them to propel themselves forward. The dorsal fin plays an important role in stabilizing fish and in the regulation of its depth.

In summary, the dorsal fin is a fin located on the back of the fish which allows them to propel themselves into the water and maintain their balance. It is made up of rigid rays and can be used as a defense or communication organ. It is connected to the body of the fish by a membranous fabric and can be mobility thanks to muscles.