So I notice my male Koi Angelfish seems a bit bloated. He was like that yesterday and it hasn't gone down today so I am starting to wonder about him. I am kind of thinking he is constipated, but I am not 100% sure. He looks and acts fine besides the bloat. He does seem a bit on the shy side since this, but other then that he seems fine in behavior. Is there anything I can do for him? He is in a 75 gallon with rainbows, another angel, a couple female bettas, and rasboras. Thanks.