I started the same way. Bad combo. Firefish = wuss. Clown = richard. Our tanks are glorified buckets. Poop goes in, doesn't want to come back out. If you must, I'd go with a pair of clowns. I find many nano fish much more appropriate. The classic clown pair is hands down the most popular option. I'd resist the urge to overstock. A pair plus shrimp goby pair is a full house imo.