Had some that accidently breed in community tanks...... go figure. A few questions for you. What size tanks are you looking to set up ? I used to keep Discus for decades. Got into rainbows thinking they would be easy after years and years of Discus . In my exuberance I bought any and all I could get my hands on. BIG mistake. Over stock ..... water changes everyday. Lesson learned. Rainbows are very slow growing and take a long time to grow , mature , and color up. Smaller varieties such as Praecox can hold up to maybe 6 or 7 in a 20 gallon tank. Larger varieties Bosemani , Madagascar , Turquoise , Goyder River , Australian etc would at least need a 55 gallon tank to once again hold 6 or 7 grown adults. Using the good ole inch per gallon theory , you could hold maybe as many as 10 adults in a 55 gallon but, you would definately need to do partial water changes every week. As far as places to find some nice rainbows you can check out Tropical Lagoon in Silver Spring They usually have a pretty good selection (currently they have some really nice Praecox and Bosemani ) Also House of Tropicals in Glen Burnie usually has a pretty good variety of rainbows. If you wanna do a road trip with the family , there is always THATFISHPLACETHATPETPLACE in Lancaster County Pa But BRING your CC and be prepared to miss a mortgage payment ..... that place is dangerous. LOL One last thought .... even PETSMART carry some nice rainbows from time to time ..... only problem is a lot of them are from Asia where they have been raised on tubifex worms hence diseases and parasites. I go to Steve at Tropical Lagoon and buy 1 or 2 portions of live blackworms. Using 2 small tupperware containers , I put in one the amount for a daily feeding. To it I add one half scoop of KANAPLEX and one half scoop of METROPLEX . Let it sit in the fridge for a couple of hours to let the worms soak up the meds before feeding the fish. Do this for sevseral days ..... you will then see the fish excreet white stringy poop which means they are releasing the parasites etc. Then you should be good to go. Hope this helps. If you have any further questions , give me a shout. Respectfully Brian