Butterworms to fatten up skinny gecko?

[RibbitsRuS]

I went to my local pet store today and saw a lone all white leo sitting there with a wound on its head and a sign saying not for sale, So i ask one of the employees why he wasnt for sale and they said he was in a enclosure and he was getting beat up on and they seperated him for his safety. So i asked if they would consider selling him and after 10 minutes of calling his supervisor they agreed to sell it. I couldnt just leave him there to die as he looked super skinny and his tail is rather skinny to. So my question is what should i start feeding him to fatten him up, I can get butterworms reasonably priced so should i fatten him up with them or should i try other things. Hes been eating crickets like crazy and just ate about 10 butterworms. Is this a good idea or should i steer away from the butters and do something else to fatten this guy up. Thanks everyone. And sorry for the long post.

Here are a couple pics of him, If anyone can tell me what he is i appreciate it im far from a expert telling morphs but i think hes a blizzard

 

[Pinky81]

Morph Id say Blizzard. And a REALLY skinny Blizzard at that. Butterworms are good, good source of calcium! I would ditch the crix and go with Supers or large mealworms and mix it up..do a couple of butters and then a super in there. Variety is going to give your little one the best chance. Do NOT overfeed while the Leo is in this state! Also i would say you should give this guy a warm soak maybe 30minutes twice daily..will help him rehydrate! Good luck and don't be too surprised if this one doesn't survive regardless if he's eating or not...he looks pretty bad!

 

[prettyinpink]

Has he been to the vet to rule out parasites?