almost definitely two females. i had bought 5 two weeks ago, that were an inch long or so. and two paired off, i isolated them, and fed the rest of them to my oscar, and now i have a breeding pair that has already successfully spawned. they are still feeding off their yolk sacks. but having said that... out of the 5... one male died by getting sucked into the filter

and the other was just too small and kept getting beat up, so i went and bought another small that i actually took the time to identify as a male and almost immediatly it paired up with one of the girls and i fed the rest to the oscar and here i am with plenty of feeders on the way

i just took this pic 10 mins ago.