I have a motoro stingray that is aprox 7 inches from head to tail and i want to get a endli bichir about 6-7 inches so i was wondering if the bichir will hurt my motoro. the motoro is currently in a 180 gal tank with 2 silver arowanas that are around 20 inches and a 5 inch peacock bass. Do you think it will be ok to have the endli and ray together? thank you for your help.