hey people. long time reader, but i believe this is my first post.
i just purchased a pair of tokay geckos from an online shop. they both seem healthy, but my male is a little lethargic and seems a bit underweight/skinny. hes not SICKLY skinny, but could use some fattening up. hes about 12" from nose to the tip of his tail. the female is about 9" and is extremely alert/bitey as she should be.
my question is: is there any sort of weight gainer i could buy to supliment my male. i like my tokays a little bit chunky. 
thanks for any help. a link or a product name would be great.
~Keith Marsh

