The friendliest place on the web for anyone with an interest in aquariums or fish keeping!
If you have answers, please help by responding to the unanswered posts.
With tiger barbs, you will need robust species. Other similarly sized barbs such as rosr barbs or golden schuberti and maybe larger tetras like bleeding hearts or columbian redfins. Zebra or giant danio for the upper levels and corydoras or brochis cats below. Just a few suggestions.