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Paired fins on either side of the fish's body that aid in maneuvering and braking.

The fin located on the back of the fish; helps to maintain stability in the water.

Respiratory organs for exchanging oxygen and carbon dioxide with water.

Overlapping external plates that provide protection against predators and parasites.

Paired fins usually found on the bottom of the fish's body, helping in stability and steering.

Also known as the tail fin, provides propulsion through the water.

A sensory organ that detects movement and vibrations in the surrounding water.

A single fin located on the ventral side of the fish toward the posterior end, assists in stability.

A gas-filled sac that helps the fish maintain buoyancy.

The muscular organ that pumps blood through the fish's body; typically has two chambers.

A sac-like organ that begins the process of digestion by breaking down food.

Used to detect chemicals in the water, crucial for identifying food, danger, and mates.

Limbs used for maneuvering, stability, and propulsion through the water.

Organs responsible for filtering waste from the blood and maintaining internal salt and water balance.

Part of the digestive system where nutrients are absorbed and waste is processed.

The opening that allows the fish to consume food and water; can vary greatly in shape and size.

An organ involved in various functions such as detoxification, digestion, and storage of nutrients.

A bony plate covering and protecting the gills; also aids in respiration.

Visual organs that provide fish with the ability to see and adapt to their aquatic environment.