A barbel; a fish with whisker-like sensory organs, or the sensory organ itself.
Variant or dialectal spelling of 'barbel,' from Latin 'barba' (beard), referring to the beard-like sensory filaments on certain fish.
Barbels are living sensors—the whisker-like organs on catfish and other fish contain taste buds that let them 'taste' the water, finding food in murky conditions where eyes are useless.
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