post them on craigslist as rare. i would suggest also creating a backstory. here, i'll do it for you: both of these fish are reincarnated souls that used to be famous child stars from 80s puerto rican supergroup Menudo. Both boys tragically suffocated beneath a mass of tweenagers while attempting to enter a concert hall in Orlando. Their youthful karma bringing them back to life as two female gouramis who just want to sing, but you have to be a pet psychic to hear them croon.
ask for $30 and use this story. they will sell. fast.