Well, I'm sad to report our "Dexter" died today. I'm wondering if she had that Lateral Line erosion, but I haven't been able to find any good pictures of it to compare. She was missing some scales along her lateral line, but I'm not sure if that is just some damage that she sustained from from the other fish when she was being inactive. Her behavior reminded me a lot of what our Charlie was like when he go Hole in the Head.
Anyways, BF has been really busy with school this year, and hasn't been diligent with the tank, so I think I will be helping him out with that now.