i bought 2 big black neon sword tails and the pet store guy said they are both pregnant and i was wondering what there babies will be worth and if i can put the bigger sword tail in my breeder net to make sure i get all the babies because the pet sore guy told me that black neon swordstails are rare and he will trade me other fish if i raise the fry to full size are they rare and can i put them in my breeder net. and do they like higher ph water.