Help!
I was given 3 platys and 3 swordtails (I can sex these & it's 1 male/2 females).
How do I sex the platys?

I had an empty 8G & seeded it w/ established media + 2 amazon swords + CaribSea brand
plant grow gravel.
I can tell the 8 is too small for all of them...I'd like to move 2 into Ren's (male)
cycled 10G.
Should it be 2 platys or 2 swordtails?
Ren has lived with other fish before (danios) in a 16G & did great with them.
He's a good candidate...If for some reason he goes pyscho, I can try them in Danny Boy's 10,
and if THAT fails, well, I'll have the hex 14 repaired soon.
Should I do every other day 50% water changes on the 8G until it cycles?
Thank you for your help!