The sunfish are the largest bony fish in the world, topping at over 2000/kg!!! Sunfish are indeed strange. They have no true tail, and instead look like a that has been cut in half. Their elongated dorsal and anal fins flop about in sync, appearing as though a stingray has been turned on its side. When they do breach the surface, their fins might trick you into thinking that they are sharks.

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Ocean sunfish