Betta Senses
Vision
A Betta has monocular vision, which means that it can see in two directions at the same time. Overall, the Betta's eyesight is somewhat poor. To detect vibrations and get an overall feel for its surrounding, Bettas use a "lateral line," which runs down their sides.
Hearing
The anatomy of the Betta's ear is fairly simple, consisting of a single channel. Essentially, a Betta hears vibrations that occur around it and travel through water. The swim bladder also plays a role in hearing by interacting with sensory parts within the ear.
Taste
Taste buds are located in the mouth and, believe or not, in the fins!
Smell
Yes, a Betta can smell! Bettas smell through their nostrils, although the process of "smelling" is separate from the Betta's respiratory system.
The Labyrinth Organ
This is a special organ that processes oxygen from the air. It is highly valuable as Bettas evolved in waters with low oxygen content. It is located within the head just behind the gills. Read more about the Labyrinth organ here.
