yeah guys the only dyed Os are the blueberry ones, but as for OP's question, i personally think that the 29g is already too stocked to allow the addition of an O that is already 2.5in, Os grow fast and unless your going to be doing water changes every other day to prevent stunting then i dont think you should get it, or go ahead and get the 20g and grow it out in there by itself until you can get at least a 75g for it by itself or larger if you want it with the ebjd. also ebjd will grow alot slower than the O so you will want to keep it in separate tank until it has grown a bit more and there is no danger of the O out growing and making it dinner or stressing it