I got to feed endangered African penguins once at an aviary! They just swallow whole fish (whether in the water or tossed to them though the air), no need for prep or plating.
Fun fact, they secrete all that fish oil right onto their feathers (it helps them glide though the water), but that makes them little stink monsters! Seriously, penguins smell rather terrible haha.
Oh most definitely, this species at least was full of personality. They were very well cared-for so they were little divas and had all kinds of interesting relationships with one another (the caretaker told it like a soap opera).
They would also ignore the fish we tossed that they didn’t prefer and wait for their favorite. So the caretaker had to go around and pick up the extra fish when food time was over lol