Thought i would share my experience with Signigobius biocellatus. Recently kept one in a NC6 with a 10gal. attached refugium, 70watt MH + 9w 50/50, FLuval 305 w/ carbon and phosban. Live stock: 1 hifin goby, 6nerite, 3turbos, 3 blue leg hermits, zoas, trumpet, cloves and alveopora. there were tons of pods live food in the tank for the 5 month duration that i kept him in there. i was able to keep him alive and fat but only with supplemental daily feedings of frozen cyclopleeze. whithout a skimmer algae quickly got out of control and eventually led me to move him to a 50gal where he is doing much better. This is in line with the research i did before hand but wanted to give it a go for myself. I would only recommend keeping this fish in a 40 breeder or larger tank with an established sandbed and no other competing livestock. Other than that he/she? was a really cool fish and definately kept the top 1/2inch of the sandbed pristine. Good luck, i hope this helps anyone trying these guys out.