So I've been doing some research on these guys, and Ive read a lot of conflicting information on these guys. I've read that their sex is determined at hatch, but I've also read they are sequential hermaphrodites. I've heard they do great in groups forever, but then I've also heard they do great in groups until they mature, and then they whittle themselves down to a pair or single in time. They seem super timid, shy, and docile, but I've read they are aggressive to conspecifics ( like most fish). I would love if everyone shared their experiences. I bought 2 standard firefish about a week ago, they are side by side about 75% of the time. Seeing as this fish has been around for so long and has a relatively high demand, I think it would be great if the reefing community could breed them. Also, I saw hybrids on reef builders, they look awesome!