The "book" says possible threat to small,delicate shrimps. The following is a quote on captive care
An architect with reef sand and coral rubble, this is a comical and fascinating species. It must have at least 3.1" of mixed substrate, including sand of varying grades and small pieces of shell and/or reef rubble so that it can construct a burrow. Keep with docile tankmates. More than one can be kept--they sometimes do better in colonies, but do not crowd. Will spawn in captivity; the male incubates the eggs in its mouth. A notorious jumper, it will leapfrom an open tank if frightened; dim tank lights gradually to prevent this. Less likely to jump after it has constructed a burrow ( many leap out the first night).
I hope this helps, Luna. _________ 9YR OLD 90G/55g custom sump/refug Mag18 Aquac 180skimmer 692w MH AC jr,yel&kole tang,midas&convict blenny,B&G chromies,Blk/yel fin chromie blackcap,nemo,neon goby,6line; Blastomussa Merleti,Acan ,BUBBLE,Torch,LTA, Acropora(2) Moon, assort zoas, yel& G star polyps, P&B ricordia, montiporas, cup&candy corals, xenias,B/G mush,flower ane(2), cherry red mussa, dusters,cleaning crew..  | 
