A huge king penguin chick named Pesto, who weighs as much as both his parents combined, has become a social media celebrity and a star attraction at an Australian aquarium.

“At just nine months old, Pesto tips the scales at a whopping 21kg (46 pounds), thanks to his hearty appetite of 25 fish a day. He’s officially the largest chick SEA LIFE Melbourne has ever seen, making him a huge hit with guests and fans around the world,” the aquarium writes on its website.