Is this tank overstocked? There’s 5 neons 6 cherry barbs 3 male 3 female, there’s two ghost catfish and a dwarf gourami and 3 dwarf crayfish. It’s a 9gal fluval flex all these fish are new. the guys at the pet store said it’s good but I just wanna know for sure. They seem to get along fine the barbs and neons school and everything eats. The tank is planted with drift wood