thank you thank you! It's only 10 gallons and there are 1 f molly, 1 m molly, and 1 m platy (couldn't sex 'em when I got them) and now four fry two of which are black and two are speckled. And then of course one panda cory (still searching for her some friends) and the cana snail, Gary lol... but with a 20/40 filter on there they seem to all do pretty well! plus the 2x weekly 40% h20 changes help too!