[TFA] Are these Plecostomus tracks?

I was doing water change today, and I saw these markings on the glass. Are 
these markings from the mouth suction of my bushy nose plec? See pics at link 
below...

http://s1204.photobucket.com/albums/bb402/aquariumninja/Plecostomus%20Tracks


~pH7, Aquarium Ninja

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