I have a 125 gallon tank with 3 midas cichlids, 2 jack dempseys and a texas. I know the midas thing wont work out. I plan on keeping one of them if they get too agressive. Anyway, I am looking for some good dithers for this tank. I have 22 yellow labs that are too young right now, but will soon be able to be a good dither. Would this work or is therea better one?