What six legged creature is hiding in coelacanth?

The six-legged creature hiding in the coelacanth is a type of parasitic copepod known as a "larval isopod." These small crustaceans can infest various marine animals, including the coelacanth, which is a rare and ancient fish. The copepod can live within the coelacanth's gills or body, feeding off its host. This relationship exemplifies the complex interactions found in marine ecosystems.