very nice looking rays .I lost my cali a few months back due to him escaping his tank.but i used to hand feed mine also.he liked chopped squid, krill ,mysis shrimp,but he ate like a pig 2-3 times a day.but every morng feeding i gave him thera+A pellets by spectrum he mowwed on them things.after a while of eating them his coloring changes from large botchy spots to bold black and white polka dots.still waiting for my LFS to get mine into replace my last one.its hard to tell by the pics also you have a spotted bamboo also? i have one too very cool to hand feed these guys, he comes up to th splashing water