Got a side hustle, like making money from a hobby, selling stuff online,

or doing a bit of dog walking outside your day job.

You might need to tell HMRC so you don't get any tax surprises.

To take the hassle out of your side hustle, search HMRC help for hustles.

You know the water to walk us. Search HMRC, Help for Hustles. Hello and welcome to another episode of No Such Thing as a Fish, a weekly podcast coming to you from the QI offices in Hobern.

My name is Dan Schreiber.

I'm sitting here with Andrew Hunter Murray, James Harkin, and Anna Tyshinsky.

And once again, we have gathered around the microphones with our four favorite facts from the last seven days. And in no particular order, here we go.

Starting with fact number one, and that is Anna.

My fact this week is that if an eel ends up in a predator's stomach,

it can reverse out through its gills.

That's pretty amazing.

This is Japanese eels, and it's recently found out that they can get swallowed by these sleeper fish, dark sleeper fish, and then they go through the digestive tracts.

But then they are just able to wibble their way back out towards the gills, and then slink out.

I think some slunk out through the mouth, and then some able to slink their way out actually through the slits that were the gills and then slink out. I think some slunk out through the mouth and then some able to slink their way out

actually through the slits that were the gills.

Yeah, that's amazing.

I actually don't really have a good idea of fish anatomy.

I wouldn't have thought that the gills would be attached to the digestive system.

It does sound all hollow, doesn't it?

We, our gills,ills as people are lungs. Yeah, are sort of connected. You know, there's a bit

where the pipes branch, but... That's true. It's like if you swallow a piece of apple the wrong way

...