Thanks to you who answered.
Lexus: There is just my problem. I can't think of any shoal fish I would want. Except too big fishes.
Simpte. Do you mean gastromyzon by unknown fishtypes? I know type and that they are peaceful, jejune and 5-6cm seems to be length they stop growing. They are from borneo and look much like gastromyzon ridens but that species shoud not ever been brought in aquarium hobbyists accessibility. I personally think that shoal would be good to apistos tank. That would stimulate them to take care of their offspring better, apistos I mean. Nearby fish store has asked me to churn out them some borelliis so...