Tripodfish, Bathypterois grallator. From plate 19 of Oceanic Ichthyology by G. Brown Goode and Tarleton H. Bean, published 1896.
Author: George Brown Goode; Tarleton Hoffman Bean

Source: https://commons.wikimedia.org/wiki/File:Bathypterois_grallator.jpg

The tripod fish or tripod spiderfish (Bathypterois grallator) is a deep-sea benthic fish in the family Ipnopidae1. It is found in the Atlantic, Pacific, and Indian oceans and is commonly found at depths ranging from 878 to 4,720 m. The tripodfish has long, bony rays that stick out below its tail fin and both pelvic fins. It uses these elongated rays to “stand” on the ocean floor and catch prey. Bathypterois grallator is hermaphroditic and is the largest member of its genus, commonly exceeding a standard length of 30 cm and reaching up to 43.4 cm.

Order: Aulopiformes
Family: Ipnopidae
Genus: Bathypterois
Species: Bathypterois grallator (Goode & T. H. Bean, 1886)