I recently bought a female betta at Petsmart (Thursday) and there is something seriously wrong with her. For starters, she barely uses her tail- her front fins work just fine but she drags her lower tail with her. She can flutter it barely-but she is acting like a parapalegic. I looked up betta diseases and I considered swim bladder disease. But she doesn't have any swelling-if anything its the opposite. She is ridiculously skinny. Her fins are really sparse, but I cannot find any indications that she has fin rot. She's just not eating and is barely swimming. All she does is lie on the bottom of the tank-her tail notably lower- and use her gills. Can I force feed her? Should I try the pea treatment for swim bladder even if she has no swelling or difficulty swimming down? I'm worried because she's so skinny but I cannot entice her to eat at all-I even took tweezers and held the food right in front of her (I tried flakes, Betta bites, and bloodworms). Is there anything I can do?