What are fins on betta fish?

1. Dorsal Fin: This fin is located on the back of the betta and is primarily used for stability and maneuvering. It helps the betta balance and change direction quickly.

2. Caudal Fin: This is the large, fan-shaped tail fin. It's the main source of propulsion for the betta, propelling it forward and backwards. The caudal fin is also important for turning and stopping.

3. Anal Fin: Located beneath the betta's body, this fin helps with stability and provides additional forward propulsion.

4. Pelvic Fins: These are the small, paired fins located near the betta's chest. They are often referred to as "ventral fins" or "pelvics." While not as powerful as the other fins, they play a role in stability and fine adjustments in movement.

5. Ventral Fin: This is a single, thin fin located beneath the anal fin. It helps the betta with stability and maneuverability.

6. Flowing Fins: The betta's dorsal, caudal, and anal fins can be quite long and flowing, especially in certain breeds. These long fins are often a defining characteristic of the betta and add to their beauty.

Functions of fins:

* Propulsion: Primarily the caudal fin, but also the anal fin.

* Maneuverability: All fins contribute to turning, stopping, and navigating tight spaces.

* Stability: The dorsal, pelvic, and anal fins help the betta stay upright and balanced.

* Communication: Fins are used in courtship displays and territorial defense.

* Appearance: Long, flowing fins add to the beauty and attractiveness of the betta.

It's important to note that fin shape and size can vary greatly depending on the betta's breed and genetics. Some bettas have short, compact fins, while others have extremely long, flowing fins.