I have 1 tank setup right now for my breeding Bristlenose plecos, have had 2 males in there for about 2 weeks now,and now tomorrow my females are coming, and justgot home from work and found 1 of the males with this(see pic). is it fin rot,if so i have no clue what could have caused it. it just showed up. out of the blue. what can I do to correct it, I have no where else to put the albino females that are coming tomorrow, how can I make this tank safe for tomorrow delivery?