Fighting...nipping

get rid of the

barbs then you can really get some interesting peaceful to semi aggressive fish, there's a ton of different gouramis you can get - or you can get some live bearers to go with them, swordtail , lyre tail mollies, platies, can all be fun n wil be fine with your current gouramies, plus you can get some cool bottom feeders, like more cories, or loaches, clown loaches, you'll have a lot of options, just look around your stores, but tigers will limit your picks a little more, i find tiger babrs tank mates tough to comeby as you have to usually avoid lots of longer fin fish, keep them in a propper group, select fish who either wont eat the barbs nor will be beaten up by them either , but with gouramis i think you'll see plenty of nice tank mates
 
AquariaCentral.com