What is this fish the shop has sold me?

[Marne]

Asked in the aquatic shop for a small algae eater and was sold the tiniest of fish, was told it would only grow to a inch and a bit , not sure if the lad in the shop actualy knew what he was talking about and i will end up with a fish to big for the tank. It looks like a mini Pleco, at the moment its tiny (less then a cm long) and is stuck to the side of the tank, not sure how much alae he will consume as his too tiny. What is it?

yeah mine kept hiding too. in fact, DP didn't even believe me that I'd bought him as he didn't see him for about 2 weeks lol

Dh hasn't seen him yet , he seems to be hiding around the filter, doing a good job of cleaning up the algae which has settled on it.

We have decided its a bristle nose pleco (but still not 100% sure), just got a good look at her (we have decided its a she) as she has come out of hiding and is cleaning a big pepple at the bottom of the tank, she seems to be stoptty at the front and a bit stipey at the back. We have named her 'Heidi' (dd1's choice).