Microglanis sp. but which is it?

[TalenT]

Hello.
I just bought this little fella from an LFS. I was told it was a trade-in, so i don't know from where it is originally, how old it is etc.
I've seen and kept several Microglanis before, but none of them have been this dark in coloration and this chubby.

In the tank at the LFS it was much darker than in the pictures, it got a much lighter base color after it had been in the bag for a while.

Perhaps some of you guys can have a look at the pictures in the link below and tell me which species it is?

http://imgur.com/a/WmbW0

Edit: The ruler in the pictures shows centimeters.

/TalenT

[Marc van Arc]

Possibly

Microglanis cottoides