I think he has too. His fins also heal incredibly fast. At first my dat was giving him a hard time so his fins got a little torn, but it seemed as soon as the payara turned the tables on the dat his fins healed very quickly. Also Im VERY close to get him on frozen shrimp. The last couple of feadings I have noticed the payara would swim up to the falling shrimp. Well last night I tied some fishing line to a piece of shrimp and he grabbed it a few times, but didnt swallow. I have hopes that in a few more tries I will get him on it.