The organs of touch are represented by tactile corpuscles (clusters of sensory cells) scattered over the surface of the body. The organs of touch are located on the lips, mouth, antennae and fins. They perceive sensations from mechanical touching of various objects, water salinity, temperature differences, lighting, water pressure, etc.
Organs of touch - in cartilaginous fish touch receptors are located on parts of the body not covered with scales, and in bony fish - scattered throughout the body, but the lips and fins are the most sensitive. The importance of the sense of touch in fish is very great: with their help they feel touch, pain, water temperature, which helps them to survive.
In some fish, the function of the organs of touch is performed by the elongated rays of the fins: in gourami it is the first ray of the pelvic fin, in trigla (sea cock) touch is associated with the rays of the pectoral fins, groping the bottom, etc. In inhabitants of turbid waters or bottom-dwelling fish, which are most active at night, the greatest number of feeling buds are concentrated on the antennae and fins. However, in catfish, the whiskers serve as taste receptors, not touch receptors.
Organs of touch
Tags: organs of touch