fishstock

hi i have a 15 gallon jbj just using jbj ato, return pump for flow and some live rock work and corals. I currently have 2 gladiator clowns, 1 cleaner shrimp, 3 astreas, 3 nassarious, 2 ceriths, and 1 tiger conch. I had a RG but it died and dont want to try my luck with another one. Im leaning...