Just noticed something has hatched inside my aquarium. Wasn't here this afternoon and just discovered it tonight. My tank is quite newly set-up, with only a foxface, a blue legged hermit, a conch, an emerald crab and a saron shrimp. Had most of the creatures from the previous build other than the foxface and emerald crab. Noticed that the free floating critters also has a pair of eyes. What may this possibly be? Any help will be appreciated thanks!