What is the function of the finbrae?

Finbrae are specialized structures found in some fish, particularly in the species of the order Cypriniformes, such as minnows and carps. They serve to enhance the fish's ability to sense their environment by increasing the surface area for sensory receptors. This adaptation helps in detecting water currents, vibrations, and chemical cues, thus improving navigation, foraging, and communication within their aquatic habitat.