I just bought a Firefish about 3 weeks ago and he is doing great. Beautiful little fish and very peaceful. He doesn't not bother any of my inhabitants. In fact, he is quite shy and he remained hidden for the first week I had him. He eventually started coming out more often. He's out swimming during the day, but when the lights dim down, he stows himself away back in under a rock... unless he smells food. He won't eat from the surface; waits until the flakes float down to him. Named him Spooky! Gets along fine with my 2 clowns and yellowtail damsel. A very interesting, beautiful, fascinating fish. I have considered getting a 2nd, but not sure how well they get along in pairs, so I've left him by his lonesome for now.