How are the barbs with the long trailing fins?I keep a pair of redhead tapajos 7.5", 1 dicrozoster male 7" and a female 6" with a school of 36 tiger barbs, loaches, rapheal cats and 4 line cats with no problems. I have sand in my tank and the geos shift through that when eating. My tank is a 135g and imo I think that's a little too crowded. My pair had bred 3x already since acquiring them a few months back. Geo's are a great center piece.