What characteristic of the Yellowfin Tuna's mouth structure suggests a diet of prey swallowed whole?
Answer
Small teeth
Analysis of the Yellowfin Tuna's feeding apparatus indicates a reliance on engulfing prey rather than tearing it apart. Its mouth is relatively small given the overall size of the fish, and crucially, its teeth are described as small. This morphology supports a diet composed of smaller prey items, such as smaller fish and squid, which are chased down quickly and swallowed whole, rather than requiring powerful gripping or aggressive tearing motions associated with larger teeth structures.
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