6 days, I would not even worry about it.
You can up the feeding a little bit beforehand, but 6 days without food is nothing for fish. The have a very different metabolic rate to humans. They do not regulate their own temperature as one example (like we do) so use energy very sparingly.
Thank you. I'll feed them a bit more over the next 3 days. My regular feeding picture in my last post, is that OK amout for daily feeding?
I would be fairly confident of leaving fish unfed for a month before any issues would arise. I would speculate that a couple of months could be fine for larger fish.
wow, never knew that they can go for a month and larger one's for two. I'm feeling hungry thinking about it