what plants

[Robert]

what plants can i put in a 20 gallon with 3 platies, 2 mollies 3 tiger barbs 3 danios 2 cory catfish 1 pleco

 

[George Farmer]

Depends on a few things; lighting, substrate, water parameters etc. I'd go for something easy to start with. The links on this forum are a good place to start http/fish.orbust.net/forums/index.php?showtopic=22602

You may find your plec will eat some plants if hungry enough, I've also heard of Platies eating plants but not too sure. Good luck.