Anatomy+of+a+Trout





The **lateral line** is a [|sense] organ in aquatic organisms (chiefly [|fish] ), used to detect movement and vibration in the surrounding water.

The //fins// are the most distinctive features of a fish, composed of bony spines protruding from the body with skin covering them and joining them together, either in a webbed fashion, as seen in most[|bony fish], or more similar to a [|flipper] , as seen in [|sharks]. These usually serve as a means for the fish to swim. Fins can also be used for gliding or crawling, as seen in the [|flying fish] and [|frogfish]. Fins located in different places on the fish serve different purposes, such as moving forward, turning, and keeping an upright position.

The **Dorsal Fin** - The main purpose of the dorsal fin is to stabilize the animal against rolling and to assist in sudden turns.

The **caudal fin** is the tail fin, located at the end of the fish and is used for propulsion and steering.

The **anal fin** is located on the [|ventral] surface behind the [|anus]. This fin is used to stabilize the fish while swimming.

The paired **pectoral fins** are located on each side that assists some fish in maintaining depth and helps with steering.

The paired **pelvic** or **ventral fins** are located ventrally below the pectoral fins assists the fish in going up or down through the water, turning sharply, and stopping quickly.

The **adipose fin** is a soft, fleshy fin found on the back behind the dorsal fin and just forward of the caudal fin.