Max size of pleco's???

[flash gordon]

I have two pleco's there about 6-8 inch's. how big will they get?

 

[MalawiBoy]

depends on what species of plecos

 

[benzjamin13]

Looks like a common. Anywhere between 18"-24" I think 18" is the average.

 

[XxPrudencexX]

 

[Jakob]

18-24".most likely just 18".

 

[PirateOscar]

what species of plecos get larger than a common?

 

[Lupin]

what species of plecos get larger than a common?

Let's see...
Acanthicus adonis-36 inches
Pseudacanthicus histrix-36 inches
Megalancistrus parananus-24 inches
LDA65-20 inches (Oddball had one)