Chapped pleco?

[TheGrza]

Gibbiceps pleco looks almost like he's got some dry skin on his back. Seems perfectly fine otherwise just a peculiar dry spot behind his dorsal fin/ sail. Any thoughts?

 

[Jmedic25]

Is he going thru any tight squeezes to get to algae?

 

[Koikid88]

My spotted sailfin gets that too, sometimes looks like white mold!! I trip out only to find he is fine as hour later. I've seen them at the lfs with this too, I think it has to do with the lighting. If it's in direct light for extended periods of time, it's black/brown fades on it's back. I notice in the mornings when the lights go on, he has a really healthy dark brown and black dots on him.
Just my opinion?

 

[TheGrza]

Is he going thru any tight squeezes to get to algae?

Not sure. He goes where he pleases but I haven't noticed him go anywhere too crazy myself