Auction is for 7 tank-raised Neon blue-eyed rainbowfish. I keep these 15ppt salt water but they will thrive in a variety of salinities and water conditions. Be warned that they will not last very long in pure fresh water.
These are quite easy to keep. I have my breeding group in a 5.5-gallon tank with a bit of chaeto algae. I feed them baby brine shrimp; the brine shrimp also thrive in the brackish water so there's never anything left to clean up.
Cyanodorsalis are prolific bottom spawners. You can use sinking mops for spawning, or just vacuum the eggs up from among the gravel and you should get plenty of fry.
Photos are of the parents of the fish for sale.