I have four tiger salamanders. 2 males and 2 females. They all live together in a big 45 gallon tank. My biggest salamander has refused to eat for over 2 months yet she’s still fatter than all the other salamanders. She used to snap at everything but now she just lays around and hardly moves. When ever I offer her food she just turns away and walks away from it. The only time I ever see her move is when she moves into the water every now and then. This has been going on for over 2 months yet she’s still fatter than the others. She’s really starting to worry me. Can anyone tell me what’s going on with her? And what I can do to get her to start eating again?