Absolutely that’s a carp scale. I’ve saved a few myself through the years.

Back fin scale, looks like a card, if it’s any the size of a a credit card that’s as big as they get

Yeah carp scale

Definately looks like a carp scale. If you hold it up to the light you shoould be able to age the fish by counting the growth rings like you would with a tree.

Yes

Yep

For sure a carp scale. I’ve reeled in many of them throughout my carp fishing days.

Thank you all for your reactions! It was fresh water en fishing for carp. So that would be a good possibility!

You can also age the fish by counting the rings, just like a tree.

Is that a fin? Photo is really unclear.

A single scale.

For a minute I thought it was washed out lumber...