What is the lateral line?
The lateral line is a specialized sensory organ running along the sides of a fish’s body, visible as a faint line or series of pores.
It helps fish perceive movement and vibrations in the surrounding water.
How the lateral line functions
The system contains:
- Sensory cells called neuromasts
- Fluid-filled canals that transmit water motion
These components allow fish to detect:
- Nearby predators
- Prey movement
- Changes in current and flow
Importance in aquariums
The lateral line is essential for schooling behavior, navigation, and spatial awareness, especially in low-light conditions.
Poor water quality, including high nitrite or nitrate, can damage the lateral line over time.
Lateral line erosion
Some species may develop lateral line erosion due to:
- Chronic stress
- Poor nutrition
- Inadequate filtration or water flow
Maintaining clean water and proper nutrition supports lateral line health.