My marbled Motoro isnt eating when i feed it, nor is it lethargic.... But It has taken out 3 Silver Dollars in 2 Weeks just biting the face off... So i know its eating.. And im feeding it swai, Tilapia, squid and shrimp... Luckily my silver dollars arent expensive ones.. but how do i fix this problem! im losing fish! xD and my silver dollars arent small, they are like atleast 5-6 inches... so they arent the dime sized ones...