do the two kinds of barbs school? I know that barbs should be kept in a group of at least 5, so I was wondering if they did so that it was one group of six instead of two groups of three...
Do you want schooling fish or more of a centerpiece fish. Some fish that could be compatible are:
a school of tetras
a school of harlequin rasboras
mollies
platys
a school of danios