Dwarf lion Fish needs help

[mistyking]

I have a dwarf lion fish. I bought him a few months ago and until this week was doing great. I have been feeding him guppies from the pet store (they suggested that diet) and haven't had any problems until now. He isn't swimming much and it seems like his breathing is very labored. He won't/can't eat anymore. He is the only fish in my tank (30 gallons) and all my levels are good to go. I don't know what to do. Any suggestions....

 

[btldreef]

Unfortunately, guppies long term are not a good diet for lionfish and they don't offer much nutrition. Short term, they're fine, but getting them only frozen food or at least feeding them marine foods is key to their survival. I've also seen guppies kept in saltwater bring ich with them, it happened with my Fu Manchu.