Marine Aquarium Expertiment (grouper)

Here's Grouper#1 (and only), member of Aquarium experiment #3.0. I didn't realized he was strictly a meat-eater breed. . . he was tiny and yet he refused to take any food unless it was alive. There's no doubt he got even tinier everyday as I couldn't bear to feed him with other smaller fish (many people use guppies to feed meat-eater. But ain't it cruel?)..by the time I managed to find the shrimp to feed him, he was already too weak to catch the pray. . . The story got sadder when Grouper became too weak to defend himself from the Rockcrab 1/3 the size of his. . .that's how he left me and the aquarium. . . If his universe was not equal to my auarium, I could say it's the process of natural selection. . . but in this case, who else was to be blamed :-(