hey guysss....hi there well this is my first post....i just added a silver aro abt a week abck hes abt 12 inches now I have a 180 gal he doesnt wanna eat food for some reason...I tried givin him aro sticks and floating pellets ...no joy 2day finally i got some live feeder guppies he just had 1 of them rest all were devoured by my oscars is this normal?