Steph, I would be cautious in assuming that what the importers/wholesalers (and therefore LFSs) are listing at the moment is actually mcmasterii or gibbiceps. In relation to the last 4 importations of "mcmasteri" into Australia, that I am aware of, they have actually been sp rotpunkt/schwarzum. (If the retail price is under A$20, I would doubt they are mcmasterii.) I cannot comment on the gibbiceps as I have not seen any specimens of them. (From memory they were on one of the importers lists about 7 to 8 weeks ago. ) Assuming the mcmasterii are rotpunkt/schwarzum (as are my "mcmasterii"), they are a pretty large and robust apisto which is easily bred and maintained. However, unless they are pretty young locally bred fish, they could make life a bit difficult for young aggis (as the imported specimems tend to be pretty big by the time they reach here and are of variable temprament). A glass or other partiition could be used, of couse, if they became a problem. Two of my males are pretty peaceful, the third is an absolute monster. Keith Canberra, Australia