I just got a 20 gallon tank for my betta and mystery snail, and I am planning on introducing some tank mates as well.
Today I got 6 neon tetras and 2 albino corydoras, who are all currently hanging out in a 3.5 gal
quarantine tank. I’ve been reading up on these guys and I know now that they are both schooling fish, so i was thinking about getting a couple more of each. I want to make sure they're all happy, but I also don’t want to overcrowd my quarantine tank or my 20 gallon. What do you recommend?