I just got 7 rainbows three weeks ago for my 55 gallon. I ordered them off of AquaBid, from RarefishatLAX. The rainbows I got were:
-2 Chilatherina bleheri
-1 Chilatherina fasciata (the new orange variety)
-1 Melanotaenia herbertaxelrodi
-1 Glossolepis Zig Zag
-1 Melanotaenia lakamora
-1 Unknown (possibly a M. splendida rubrostriata)
I ordered the 5 fish assortment, but he sent a few extra fish as you can see. The fish are young aldults right now, so they are just starting to come into their colors. I can't wait to see what they look like in a couple of months.
The C. bleheri are beautiful, they have an irredecent green on the top of their bodies fading to red on their tails. The C. fasciata is starting to show some nice colors as well. The C. fasciata has a strip on the top of his head from his nose to the first dorsal fin that lights up orange from time to time. It's pretty cool to see, the color changes completely. All the rainbows are males, but they still flash their colors to each other to try and show dominance. The C. bleheri also have a strip that lights up yellow.
The G. Zig Zag has orange lines that seperate his scales. As he matures, his body begins to grow vertically, enlarging the space in between the scales. The results are bright orange lines that zig zag in between the scales.
A few good sites to go to for pictures are http://www.loumarks.com/rainbowfishcam.html
The rainbows are easy to keep and have been very hardy thus far. They are easy to feed, they eat whatever you put in the tank. So far I've been feeding a variety of Omega One Super Color, Omega One Veggie Lover, and frozen brine shrimp and blood worms.
The rainbows don't have any special requirements as far as pH or hardness, they thrive in most anything. My pH from the tap is around 8 and they are doing great. They are a hardy fish that are active and beautiful.
I couldn't find any decent rainbows in my area, they all looked like pretty weak stock, that's why I ordered them off of AquaBid. I would highly recommend RarefishatLAX; the rainbows I received from him are beautiful, plus he sent extras.
If you can find some nice looking rainbows in your area, I would recommend them. Boesemani's look fantastic, they would be a great addition IMO