I need to know!
 

Anyway i went on line to look up blue or 3 spot gouramis and the website said they do well with fish of the same size and i wanted to keep them with smaller fish like barbs and livebears and i wanted to if that was okay

Very small fish, especially livebearer fry, might get eaten. I would also avoid other anabantids and generally flashy looking fish (like male guppies) as these might get picked on.

How big is your tank? Blue gouramis can get pretty large.

35 gallons

I think with the Platy, Molly, Cherry Barb AND Blue Gourami's assuming you have nothing else in the 35g its kinda stretching the limitations there.

well do you i should get something else

What about a honey gourami? They're generally better community residents and don't grow as large as blue gouramis.

that sounds fine i guess