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Tripod Fish (Bathypterois grallator)

Tripod Fish (Bathypterois grallator)

I promised more weird fish this year, and here is a fish which amply delivers on this promise.  This is a tripod fish (Bathypterois grallator), an eyeless wonder of the deep ocean plains.  The fish spends most of its time standing completely motionless on its elongated fins which reach up to a meter (three feet) off the seafloor.  It mostly copies the feeding habits of sessile invertebrates such as sea anemones and barnacles and feeds on tiny creatures which bump into its elongated (and highly sensitive) front and top fins.  It walks extremely slowly along the ocean bottom on these high fins with its mouth facing into the deep currents.

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Despite its sedentary preferences and circumscribed lifestyle, the tripod fish has not given up its brain or its ability to swim.   If and when the fish decides to swim, its stilt like fins deflate and become flexible.  Scientists have not pinpointed the exact mechanism for this transformation, but erectile tissues are not unknown in the animal world. Speaking of which…

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Mating is difficult in the abyssal zone (as any Tinder user could readily aver) so the tripod fish is a true hermaphrodite possessing both male and female reproductive organs.  If two tripod fish chance to meet, they mate together in all sorts of crazy troubling ways, however, if the fish never finds a partner it produces both sperm and eggs and mates with itself!

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