I purchased a pair from a local breeder about 2 months ago.The male was twice the size of the female and gorgeous but had a bit of a hump to the spine so after talking with the breeder we swapped for another smaller male with less color.These fish were all from the same batch.After introducing the new male with the old female(the female had been bright yellow for a couple of weeks) the new "male" turned as yellow as the female.For the past five weeks he has shown no increase in size and both of them have been bright yellow the whole time.They have spent a little time together but have caves on opposite sides of the tank and he chases her away from his cave when she gets too close.The past couple of days she has lost some of her yellow but he remains bright gold.I found another thread where the female had the finnage of a male but was indeed a female.From observing them I am strongly convinced this is a female but would like some confirmation.Here is a picture of the replacement "male".