Yes Steff, Females are a problem usually not much in colors to flash, but by elimination you should be able to find which, is which.
I’m having a simialr problem with the Ampah. There is definately a female but none of the males are yet interested and she ignores them… now I’m wondering if maybe she is a female filamentosus. They were all sold as filamentos and I hope Ampah and filiments were not mixed (the dealers were/are unfamiliar with Ampah at all).
So now I must wait for full maturity and I haven’t a clue to there age (they were young and I’ve had them for 3 months) The males are easy by checking their color patterns, but she just seems different nd I would think young males would be offering some attention to her.
One thing I’ve learned about keeping fish…. patience…patience… and THEY know who’s a male and who’s a female. They will make you decions for you!!