tamtam
Aquarium Advice Addict
I do believe this is a chinese algae eater.
I went into the local fish store to purchase some Siamese algae eaters for my tank and was mistakenly sold these fellas instead.
They are often mistakes as SAE or the flying fox. There are differences though if you google them you can get an idea.
They will grow to be rather large and are actually pretty nasty little guys so I would suggest doing some research to see if they will be ok in your tank long term.