NatakuTseng said:Not true at all CD. There are many different species of Bristlenose plecos, not just one. The Temminicki (sp) and the dwarf albinos generally don't get over 3.5". You can't just lump bristlenoses into one large species, cause there are many, just like otos, there are quite a few different oto species.
NatakuTseng said:Yes, they are a bit harder to come by, but most shops can get them still. Even the larger 6" onces will do just fine in a 20L. They don't need to be in groups and really aren't that active. If you can't get the smaller species though, I do agree that Otos would be a better choice.