Well they get on fine and I dont have any bio load problems, most are full sized and the ones that are not are being moved very soon(except the mango who grows super slow and wouldnt do too well with the big cichlids).I'm lucky with the leopard cactus because they are known for being territorial with other bottom feeders but he was too small and weak to go into the big tank when I got him.Oh and the red fin dwarf is basically an otto.