- tensor tripodis
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a small muscle in certain catfishes with drumming muscles on the gas bladder, e.g. Pimelodidae. The tensor tripodis runs from the posterior surface of the neurocranium to the dorsal surface of the gas bladder near the tripus and is thought to reduce or stop vibrations of the tripus and so sound conduction to the inner ear. The fish can drum without deafening itself
Dictionary of ichthyology. 2009.