I have 1 Betta, 1 Cory catfish, and 6 ghost shrimp. I generally tend to have 4-8 Ghost shrimp (every once in a while, I find my betta eating a dead shrimp, though I'm not sure about whether or not he killed it). I am planning on adding 2 more Cory catfish soon. Would this tank be overstocked, or would I be able to fit around 4 more neon tetras in there?
... I should probably mention it's a 10 gallon tank.