I went to petsmart yesterday and purchased a pretty little crowntail betta. My first fish! I'm a little concerned about him and was hoping maybe to get some help or advice. He doesn't seem to be thriving. He keeps his pretty fins closed now and seems to.. Pout in the corner of his gallon tank. Not interested in eating and he seems to enjoy his crappy cup from Petsmart than his swanky tank!!! I'm wondering maybe if he is sick??

The cup he came in had blue colored water, which of course the woman who worked there clearly just didn't want to talk to or help a first time fish buyer... She just pointed and told me "new to fish? Get a betta." and walked off.

Anyway thanks in advance!