Spitting boxfish

[ScubaSteve]

Ya, boxfish do thet. It's just the way they are (I've even seen one do it in the wild). I believe they do it only when they're hungry, sort of like begging/annoying the s**t out of you until you feed them. Try an autofeeder for during the day?

A lot of fish do this. My Longnose butterfly did this for for food and for fun. I'd sit on the couch next to the tank to watch TV and the fish would spit water at my head to get my attention.