BIGGEST PLECO?

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Thanks for the answer Wyldfya and Davo
Yes my adonis is spotty
therefore Acanthicus adonis
I love their long tails too ... that would be one in your avatar Wyldfya?
 
I used to have a carnivorous Common pleco. He would swim at the top and drop on unsuspecting fish and weigh them down, and suck them to death. We would find a fish at the bottom with a white spot about 1.75" in diameter. Poor things never saw it coming. By the way he was around 22"
 
I gotta get me an adonis...

Are they aggressive towards other fish??
 
They are often agressive toward other plecos. They will pick fights with larger plecos, but the fight will dwindle as they establish a pecking order of sorts. If you keep them with other plecos, try to keep them with some fairly tough species that are larger. Keeps the ego of the adonis down.
 
and make sure that if you put it with a catfish, that its not a pushover, not that many monsters are
 
I had mine temporarily with some smaller plecos, and he would bully them around quite a bit. When I noticed this I put him back with my 10" Choclate, and he will take him on, but not as often, as most times the choclate will get his way. He didn't really bother my 14" Marble Cat when they were together, but then again that cat was scared of his own shadow.
 
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