Help with Identifying Nepenthes Pitchers

Hello! I just got into the hobby with these 2 5cm nepenthes plants. I was hoping I could get some help with identifying them? I have a few guesses but I am an extreme beginner who got them on a bit of a whim. They were just displayed as carnivores plants which isn’t helpful lol. The current setup is just for the evening as I’ll be repotting them in a better substrate mix tomorrow and adding rain water in the jar for added humidity although I’m already at 54% according to my gauge. I was also curious as to what the general consensus was on feeding these plants fish food as nutrients? I’m very experienced in aquatics so I have a wide variety of frozen and dried fish food & insects but I wanted to check first on what type would be best. Thanks for all the help! I’m already obsessed.