Buying all of one species at a time. Schooling Cory cats

fishtanktv.com - I don't normally recommend that you add a bunch of fish to your tanks at once. however. when buying cory cats, it is sometimes hard to get a school that is exactly the same when you go back and they have sold out.. So buy them all at once. Save yourself the trouble...its not a big deal, but I am big on them all being the same exact fish...