Unusual Pleco Behavior?

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Mbpartain

Aquarium Advice Newbie
Joined
Jun 26, 2017
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Hi! I only noticed him doing this about an hour ago but one other fish has been sick this past week with ich so I thought I'd go ahead and post. Is this unusual pleco behavior? Should I be concerned? Partial water change? IDKKK!!!
 

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On the glass is ok, perhaps odd to be so near surface - I would increase aeration if that might be a concern.
 
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