Hi Riley.
Its difficult to see species, – it could really be any species.
They do look female, but it can be difficult with fish that have not been feeling well for some time, or are young and scared. I would wait a little to determine if they are indeed all females. A male can be completely without colours untill he feels safe and good.
If theres no male in the flock, then id is impossible, – unfortunately. Most species females look totally alike.
They need soft water, preferably also low ph – but not nessesarely lower than 5.5 – even 6 can be okay. If you are not experienced black – soft water aquarist, – dont aim for too low ph. It more important to have it soft – you can achieve this by using RO water, or even sometimes rainwater. But you would have to measure this.
Otherwise they appreciate no or low circulation, addition of leaves, (ketapang or other), brown/blackish water colours, hiding places (caves, small wood pieces, leaves.) Low light.
They need live food, – most will never take any other. This is one of the biggest challenges.