So title states it, have a 40g display with 50-55total volume. Im very indecisive about what I’d like to throw in the tank, I want something somewhat unique , but I know options are limited with a 40g and with corals. Currently stocked with two clowns, a tailspot blenny, fire shrimp, various crabs and snails. There was a watchman goby that I have not had eyes on for about a month that has me worried, gonna wait a while before I write him off. Although I swapped him to a brand new tank so I fear he succumbed to a clean tank or maybe fell victim to a few gorilla crabs I’m working on catching. Anyways I know I’m limited on maybe 1 or two more small livestock items. But I’d also love some suggestions on some unique inverts or corals. Thanks in advanced. Tank is about 4 months old and coming along great especially with the tbs rock. My previous tank was an utter failure that was down in 1 year.