Pseudomugil luminatus, the Red Neon Blue Eye.  These fish were spawned outside in a tub on my deck this past summer.   I filled the tub with hard tap water and drained some off as it filled with rainwater, so the parents spawned in a variety of water parameters.  Three pair, all young fish who are starting to show for each other.  Old enough to easily tell males from females, but not sure if they'd spawn themselves yet or not.   They'll start soon, if not already.  A great fish for a small planted tank. Peaceful.   They appreciate a planted tank with a dark substrate for best colors and at least occasional live foods.