1 stingray 1 lungfish, 2 parrots, 2 albino oscar,2 flame oscar,2 pacus,shovelhead catfish,morey eel....i started with these fish. the stingray died first, dont know why, then my eel got a huge quarter size fuzzy on him overnight. 3 days later died after convolsions..it was horrible. parrots covered in white ich..i treated now for 3-4 days spots gone fish act ok,but now all of the fish have a black edge on all fins. especially the parrots....and oscars...they play and eat fine, but it gets more black every day...is tyhis normal..no fin rot occuring as of yet. looks normal just black.what is this...please email my addy at bpro@cyber-rights.net ........please help, i love my babies..