Keep in mind that or 3 or 4 bristlenose will eventually breed in the thousands. Just make sure you have a cave with a small entrance (so the eggs wont get eaten) and the female will lay the eggs and the male will protect the eggs untill they hatch. I find that its better to remove the fry from the cave into a fry container. This way they wont be eaten once they leave. For the recond, the LFS does not carry the bristlenose often. Which means you can raise the the fry amd make some $$$. 
