I have a little beta fish that I take care of at work, and I've grown quite fond of him. Lately, he's been troubling me with his antics. He's become very lethargic, either hanging out at the bottom of the bowl near the rocks, or at the top. And today, I was watching him swim, and he seems like he's having problems with his left side. He's only using his right fin to swim. I change his water consistently, and feed him every morning, only what I know he'll eat. Is there something I'm doing wrong?
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