What you could do is ask the lfs what THEY would want to take off you, they could already get an influx of rams from elsewhere whereas if you said you were breeding a less common apisto they might be more interested. Find out what the demand actually is and go from there, else you're wasting your time really - yes, it's fun as a hobby, but you've got to be able to move them on for cash, credit or free, else you're stuck with a load of fish.