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How does the position of pelvic fins help perciform fishes maneuver in small spaces?
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perciform
Bluefin tuna (Thunnus thynnus orientalis) in the waters near Japan.
In perciform fishes, the pelvic fins are typically located directly below or slightly ahead of the pectoral fins. This specific positioning provides these fishes with a distinct advantage when maneuvering over short distances. By placing these fins in an anterior position, perciforms gain enhanced control and stability, which facilitates precise movement and navigation within confined or small spaces.12