Can’t see this little guy listed in the snail article.
He’s growing rapidly and moves just as quick.

He has a slight cone shape at the back like a trumpet.

I have 4 trumpets and 2 zebra’s plus this one. And it doesn’t resemble either. More like a hybrid of the two.

Any ideas?

https://youtu.be/8W5OitAln-Y

Here’s a photo of the one in the video above.

I’ve just spotted a smaller, baby one of these this morning.

It's a physa species (bladder snail).Probably arrived with plants.