Why would a 6-7 inch reticulatus maul a 4- 6inch motoro. I might add both are females. The reticulatus is on a rampage this is the same fish that bit a chunk out of my bichir and bit the face of my mbu. I feed in night crawlers and blood worms. If I feed it more than two or three night crawlers it regerges onme. So what is the issue with this mean sting ray. She seems to be bullet proof.
Maybe put in a divider till the Motoro gets big enough to hold her own.