Some sharks are seemingly named after birds:
great white shark: hoojirozame 頬白鮫 from hoojiro (meadow bunting)
sandbar shark: mejirozame 目白鮫 from mejiro (white-eye)
blue shark: yoshikirizame 葦切鮫 from yoshikiri (reed warbler)
Maybe a great white does have white cheeks, but I'm not sure if a sandbar shark really has white eyes, and I see no connection between blue sharks and reed. Is this just a coincidence?
On another note, the triplewart footballfish (箕作柄長提灯鮟鱇 mitsukuri enaga chouchin ankou) seems to be named after the long-tailed tit (enaga) which is equally baffling.