New addition for my Tank?

[dorkfish]

mollies will eat algae and also feed ur fish with fry.
also

Mollies can grow to aprox. 5inches given a proper setup and time to grow.

Pink kisssers will grow to a foot or more given time and a proper set up.

 

[Web Gazelle]

Mollies are not a fish I want to keep right now. No live bearing fish. Thanks for the suggestion though.

 

[mduros]

I will probably pic up an Opaline Gourami today. Unless you guys think that is going to overstock my tank?

I think he'd get along okay, but opalines get pretty big. I have two in my 55 gallon, they are not a year old yet and are about 5 inches. Meaning, I think a 20 is too small for the fish to be healthy and happy. Look into Colisa Lalia, Colisa Chuna or Colisa Sota. They are all variants of dwarf gouramis.
Good luck,
Mary.