I recently set up a new 20 gal tank! I have about 4 neon tetras and 2 corydora so far. The tank is already cycled and ready for some new fish! I’d love to get a semi-aggressive fish, but I’m unsure if they’ll get along with my neons. What are some tank mate combos you’d suggest? I’d rather stay away from mollies and guppies due to already having 2 tanks set up for them already.