I have a 55 gallon cichlid tank with a JD, blood parrot, and one convict...what type of dither fish can go in this tank and how many? Would adding them overcrowd the tank??
Really the JD and Blood Parrot get too big for a 55g....they both reach around 10" when grown....hopefully this is a grow-out tank and you will be upgrading before they get too big.
As for dithers I have heard Swordtails are a good choice.....but you are pretty crowded in the tank now and probably can do without any.