wondering if my aquarium is overstocked

[allie]

Hello everybody!
I have a 20 gallon aquarium with a couple natural plants.
I have three small tetras that will get about 2-3 inches as well as 3 dwarf gouramis that will also stay between 2-3 inches. I also recently added a cory cat that will get to about 3 inches I believe. The dynamic in the tank is great at the moment, but since I'm still new to aquariums, I wanted to get a second opinion. Thanks!

 

[allie]

It's actually a Cory cat, not a catfish

 

[meowzer]

Apparently you are talking freshwater.......and In my opinion YES.....that is too much for a 20G....gouramis get aggressive
what type of tetra do you have that gets to be 3"?

 

[2quills]

Cory cats are catfish. I wouldn't add anything more than what you have now. Its good that you have natural plants though, they'll help in keeping the water perameters stable. Good luck.