On the lateral sides of think and tall lateral line canals are present. They are present deeply In the dermis. In the head region there are connected by transverse canals. In the head region cephalic canals are present
- Infra orbital
- Supra orbital
- Hyo mandibular
From these lateral line and cephalic canals small tubes win arise and open on the skin. These canals are lined by epithelium. They contain gland cells. Recreceptors are present. The Chemoreceptor is (neuromast) group of spindle shaped neuro sensory. They are connected will nerves. The nerves connected with VII Cranial nerve.
The lateral line system detects waves and currents in water.