please help. sick gecko

[ChitownPat]

So I recently purchased a pair of leos from a small vendor at an expo. They appeared healthy one was a little smaller than the other. Got them set up and fed them no problem. A couple of days went by and the bigger one would begin bullying the smaller one so it wasn't eating. Decided to separate them. The small one still wasn't eating mealworms and the tail was getting thinner. I threw some crickets in there and it ate then right away. Then it started getting picky again and the stools were loose. About 3 weeks have gone by and its eating a little and the stool is more solid but its still very skinny and the tail is very thin. Its still active not dragging itself around but skittish. I'm hoping it's not crypto and the other one is healthy, nice thick tail, and has become very friendly. Any thoughts? Questions?

 

[Music City Geckos]

Personally I would take it to the vet and have it checked for crypto also the cage mate too since they shared the cage. If it does come back positive please let the breeder know that you bought them from.