摘要: Publisher Summary This chapter reviews the morphology and behavioral relevance of lateral line system focuses on peripheral central processing information. The smallest functional unit is neuromast, a sensory structure that occurs freestanding skin (superficial neuromasts or SN) in fluid‐filled canals (canal CN) usually open to environment through series pores. Lateral are composed hair cells, supporting mantle which separate neuromast from surrounding tissue. In natural habitats, hydrodynamic stimuli caused by inanimate animate sources. Some fish use self‐generated water motions for perception. capillary surface waves prey detection. Besides visual, acoustic, olfactory cues, information provides basis many decisions. mottled sculpin, Cottus bairdi , nocturnal feeder uses detect prey. viewed as close range However, some predatory can sense even track trail fish. One most striking differences between primary afferents neurons their responses repetitive stimuli.