How fast do plecos grow?

It all depends on how much they eat and how much room they have. The bigger the tank and more there feed the faster they grow less room and less food the slower they grow less food big tank they will grow slow. This is pretty much the same for the bristle I would imagine
 
my pleco is about 1" or so, in a 20gal. tank and i feed him sinking shrimp pellets, sometimes blanched lettuce and he eats algae i think. i would say he has plenty of room for now and is well fed, what would you say his rate of growth will be...per say a month....in these conditions?
 
Our Common Pleco was 2 inches when we got him 8 months ago. Just measured him today and from nose to the tip of his tail he's 9inches. He's in a 120Gallon, loves Zuchinni, shrimp pellets, algae wafers and whatever he gets off the glass and plants.
 
I must have a mutant pleco, he started out as a itty bitty maybe .5' guy, and grew to what he is now, 3-4' long healthy fish. It only took him 2-3 months to get this big, lol.

uh, perhaps I am confused between inches and feet, lol, INCHES I MEAN, lol, INCHES

just for the record, yes I have seen a 4 foot pleco, it was for sale at my lfs, still for sale come to think of it, was a giant thing, lol
 
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