def to small for a Volitan.. and if you or anyone else in your house is allergic to bee's you may want to seriousely re-consider that. if you want a single aggressive fish, I think a humma humma or a triangular trigger may stay small enough. and they have alot more personality then lions do imo. I could be wrong about their max sizes. otherwise a snowflake eel should be okay if you want predatory. otherwise a single cool fish, might check out the wolf fish? or you can go between 'n go brackish and get a G-tile eel often called a FW moray. otherwise for lions, you're best off with the dwarf varieties.. and I think the fu man chu lions stay small enough to be happy in a 75 but 'm not 100%.