So I bought a pair of GSM from sustain able Aquatics a little over a year ago,female 2" plus,the male slightly smaller.I'm guessing the fishes were about 1 year old when I got them,after a year with me which would have them a 2 years old the female who is about 3" only has the faintest yellow color on her head stripe the other no color at all,thought they would have full color by now.I've seen smaller GSM with full color,it's the reason I wanted a pair, any thoughts?