On live aquaria .com, I just found out that they list the sand requirements for wrasses and gobies. Is it your opinion that that site is accurate in theri statements? I am looking for one wrass for a 180bb, and would not feel good with one that was itching for sand. I'd never put a yellow watchman goby in a bb. What is the purpose of the flasher cocoon? I had a sixline with a sandbed, and he never buried himself. However, he did slow down and 'idle' behind the rocks at night. If the rockwork was very open, with little to no protection from nocturanlly active fish, do you think that a flasher would be stressed? Sorry, just realized this is in photography...
Cheers,
G1