I am just curious when the male apisto cacatuoides will start to show off thier color more. I start to see hints of color on double red/triple red males when they are about 5/8", and definitely at 3/4". I have males now in the 1" - 1.25" range that are showing full red in their caudal and dorsal. Timing depends on how fast they grow. I can't say mine always get to color-up sizes in 50 days, though I am sure that if conditions were right, they could exceed this size in that timing. Also, what are the usual male to female fry ratio. more males or females? Ratio seems to depend on water chemistry, as discussed in various forms in the past. With cacatuoides, my experience has been nearly all females when using softer, more acid water. Right now, I am using slightly alkaline water with 170 ppm hardness and I get about 85%+ males. Tom