Stocking a 20 Gallon Tank

chrimsomfox

Hi, Beginner here!
So I recently came into a 20 gallon tank that came stocked (from a family member) with 4 Panda Mollys, 2 Green Cory Cats, and 1 Panda Cory Cat. It's only slightly planted, (with some new offshoots of anubias and 2 medium sized java ferns, that I've placed) and has one decoration (a tree with tunnels).

I'm just trying to determine if this tank would be considered to be overstocked already, or if any other fish could potentially be added to the tank (such as a singular Honey Gourami or such).

With the 1" per gallon rule, i'm pretty sure that the tank is a little small for their full grown sizes, however there's other information stating that different fish could be added based on where they predominantly swim in the tank? I'm just a little confused.

Thank you for any help!

(EDIT:The tank is currently running a HOB filter (I’m pretty sure it the TopFin Silentstream PF20 PowerFilter that came in a set) andI’ll be adding a sponge filter too)
 

Jpond

Honestly, it will depend on the filter system you are using. I would have no issue adding a couple Honey Gourami. As long as you have a great filter and keep up with the weekly water changes.
 

YellowGuppy

It also depends a lot on the genders of your mollies. As livebearers, they can populate a tank pretty quickly if you've got at least one male plus at least one female in the group. But if you only got four of them, odds are good that they are all the same gender... otherwise there would likely have been many more of them!
 

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