hlford

My fiance and I have a 20 gallon tank. In this 20 gallon tank we have 5 black skirt tetras and a plecko. We are planning on getting more fish tonight and were thinking of adding 2 or 3 Dwarf Gouramis plus maybe some platies or cherry barbs. What do you think? We are new at this hobby. Thanks for your help.

Barbrella

You could add one Dwarf gourami IF your pleco is a dwarf variety. Do you know what kind it is? If it's a bristlenose it will probably grow to 5". If a common, you cannot keep it in that tank.
Then you have 10" of skirt tetras and the gourami, fully stocking your tank since it's best to keep it a bit understocked.

I wouldn't add any livebearers like platies to this mix. Their constant breeding and heavy waste output will cause strain to your bioload and degrade water quality.

hlford

Well, we just added a Dwarf Gourami and 6 Cherry Barbs to our tank. So far so good.

How long before the Plecko reaches full size?