central american banded

I got a central American banded gecko who is losing weight but keeps eating can anyone help me

First thing you might want to do is collect a good stool specimen and have it checked by a vet. Worms are pretty common. The juvenile bearded dragons I got in June had pinworms. Several more things come to mind: what are you feeding it and how often? is it competing for food with a larger or faster cage-mate and losing? and, how old it it? Hope these points help. Post what you find out if you can. Hope you can get to the root of the problem.

In a ten by itself food crickets and some mill worms I got him bout a year ago so he might be 1.5- 2 years old thanks for ur help