Theres a pair of Bolivian Rams, pair of Kribs, 6 Black Neons and 2 Neons..plus the two Albino Corys. In a 20 gal. Now, I know I have to rehome the Kribs or Rams, and Im in the process of doing that, but they seem to be OK for now. I was thinking it was fin rot, but now the bigegr cory, floats...