Today I did a water change on my 10 gal guppy/shrimp/snail breeding aquarium. I also noticed a bit of what looked to be fungus on the fin of my pea puffer, who I decided to name Claire, so I treated her with some ich-x. Additionally, I found and purchased an albino female krib on aquabid so I should hopefully be able to start breeding kribs. Lastly, I fed some of my fish blackworms which they seemed to enjoy however my puffer didn't like the frozen bloodworms I fed last night. Any ideas why?