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Published 2014
A puzzling feature of this gliding is that the fish have been seen to accelerate in the course of it. The explanation is that they allow themselves to lose height until their tail fins are just in the water, then vibrate these as rapidly as they can, which causes them to gather speed. Maximum speed, as measured by an expert in SE Asian waters, is in the region of 65 k.p.h. (40 m.p.h.); see Davidson (1977).
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