What are the four whisker-like organs in front of the white sturgeon's mouth used for?

Answer

Sensing vibrations and detecting food buried in the substrate

The four barbels located immediately anterior to the white sturgeon's mouth are vital sensory apparatuses designed specifically for its benthic lifestyle. As bottom-dwelling scavengers, these whisker-like organs function as highly specialized detectors, enabling the fish to perceive subtle underwater vibrations and pinpoint food items hidden beneath the riverbed silt and gravel. This advanced sensory capability effectively serves as a sophisticated underwater nose and touch receptor system, crucial for foraging in often turbid or murky aquatic conditions where visibility is low.

What are the four whisker-like organs in front of the white sturgeon's mouth used for?
fishaquatic lifelargeriversturgeon