Tripodfish, Bathypterois grallator, Plankton; larval fish; pelagic larval marine life; vertical migration marine creatures; South Atlantic Ocean, Gulfstream current, The tripodfish or tripod spiderfish, Bathypterois grallator, is a deep-sea benthic fish in the Ipnopidae family found at lower latitudes. It is now relatively well known from photographs and submersible observations, and seem to prefer to perch on the ooze using much elongated fin rays in the tail and two pelvic fins to stand, facing upstream with the pectoral fins turned forward so the outthrust projecting fin rays resemble multiple antennae, and are indeed used as tactile organs. B. grallator is hermaphroditic. At least 18 species are placed in the genus Bathypterois, several of which have similar appearance and behavior to B. grallator. Like a lot of deep-sea creatures, they tend to grow larger than most shallow-water fish. This benthic fish grows to be 3 ft.Scientists have suggested that fluids are pumped into these fins when the fish is 'standing' to make them more rigid.Bathypterois grallator has been found relatively widely in the Atlantic, Pacific, and Indian oceans from 40°N to 40°S. It is a wide-ranging eurybathic fish found from 878 to 4,720 m (2,881 to 15,486 ft) deep. Along with the giant squid, deep-sea anglerfish, and black swallower, it is one of the permanent residents found in the abyssal zone and was directly observed on the historic voyage of the bathyscaphe Trieste to the Mariana Trench.