Is it possible to breed guppies and shrimp together in a 20 gallon? I also have a spare 5.5 gallon that I don't use, but I am going to purchase a 20 gallon tank used for around $50. For shrimp, I would breed neocaridina shrimp, and guppies, I could breed fancy guppies or I could buy a trio of Full Red Albino Guppies for $12 CAD. Are they easy to breed?