A cave fisher was a Lobster-like monster which inhabited subterranean locations and ambushed its prey using a sticky filament similar to a strand of Giant Spidersilk. Cave fishers grew to about 7 feet (2.1 meters) in length and had a hard, chitinous shell arranged in overlapping plates for an exoskeleton. It had eight legs and two forelimbs that ended in large, powerful pincers. While this armor was strong, cave fishers had flammable blood, and were very adverse to flame.
Living underground, cave fishers were sightless creatures that used multiple auditory sensor organs to detect prey. These organs were located on the head and could be mistaken for multiple eyes. The creature had a large proboscis from which it shot their sticky filament up to 60 feet away; they could then reel in prey of similar size at a great speed. They typically used this filament for hunting, hiding on ledges above passageways and shooting it at creatures that wandered by.
Cave fishers would attack any creature up to man-sized, but was intelligent enough to avoid large groups, preferring to pick off scouts, loners, and stragglers. Normally cave fishers worked alone in a area within 300 feet (91 meters) of its lair] but sometimes they could be found in small groups of less than five, and these pods were known to coordinate ambushes of small parties. This cooperation usually ended when there was food to be fought over. Extra food, alive or dead, was wrapped in filament and stuck to a surface in their lair for later consumption.