how fast do common plecos grow?

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AC Members
Jul 22, 2010
hey everyone i am in a bit of a pickle. i have recently purchased a common pleco for some algae control. i knew the size they get but am unsure of the speed at which they do this. my father has become quite atached to the little guy so im a little sad if i have to get rid of him. i do not see a new tank in the near future. i am just wondering how long i can have him before he outgrows my 29 gallon tank


Top Dog!!!
Jun 19, 2002
LA County, California
Real Name
Gabriel (Gabe)
If housed and fed properly "commons" can grow about .75-1" a month. It would be best to take it back now before you and your dad become to attached to want to take it back. I would look for some BN's for your sized tank.


AC Members
Jan 26, 2010
Culpeper, VA
Mine grew to 5in in about 6 months, 2-3 months later he was 6in. After I moved him to my 90g, he grew to 8.5in in under 2 months. The better food, water and more space you give, the faster they grow. But they do grow the fastest in the first year.
I agree with taking him back now and getting a BN or a Rubbernose/rubberlip instead. Or start saving for a 90g or larger tank.
I fell in love with my P. J. Pleco, lol. Searched CL for months before I found him his own big tank. Never would of gotten it if I hadn't gotten him. ^.^