I was hoping to show the Pear, but I've a whole run of dud pics...

So, one of now not so youngsters, on the Zucchini. They always seem to gouge out the seed section first. And following, one of my older pics, from earlier in the year. And last, young Bristlenose with Apple. They obviously don't think much of the skin.

Must admit all mine tend to eat from the middle out as well, mind you i find most of my fish will also eat the skin