Complex sentence: Some creatures, such as the angler fish have a concentration of photophores in a small limb protruding from their bodies which is used as a lure, to catch dangerously curious fish, which is considered to be much like angling, hence its name.
Split into simpler sentences: Some creatures, such as the angler fish have a concentration of photophores in a small limb protruding from their bodies which is used as a lure. This allows catch dangerously curious fish, which is considered to be much like angling, hence its name.