Bichirs, other datnoids, silver dollars, sometimes severums and others. I have never had experience keeping any of these together except dats with dats. also the dats must be big to go with the bichirs
I keep 5 Rosy Barbs, 2 Red Severums, and 2 candy stripe plecostomus with my 2 IT's. The IT's don't get a long at all, but maybe thats cause they just met.
pim. blochii (four-line cat) is a medium size tough catfish. I've kept them with all big cichlids and currently a dat/aro/fronts/plecs... 9" after 6 years.