Overhere a video of my livebearer paddle pool. At the moment there are bluetail splitfins (Ataeniobius toweri), sailfin mollies (Poecilia latipinna), yucatan swordtails (Xiphophorus yucatan), Rio Tefé wild guppies (Poecilia reticulata) from Brazil, gudgeon (Gobio gobio) and three shubinkins in there. Mind that this combination works. The bigger fish are leaving the fry of any kind alone in this pool. The size of their enviroment makes them not interested in those swimming fry.