EUREEEEKA!!!!!!!
I have found a year-round, mixed-sex, Blue Tilapia (Oreochromis Aurea) supplier! CHEAP!!! He also has Red and other types too. From fry to adults.
It has been so hard to find a supplier I have seriously thought of trying to fill this niche somehow. I am currently setting up a 100 gallon aquarium to raise some for spring stocking. I intend to document this but am not sure of what records to keep, parameters, tests, anything. I'm sure not a scientist, just impulsive with OCD. (At least that's what the wife says)
If you want his information, email me. I will need to contact him first to see if he is willing to have his info given out though.