Originally Posted by CompMage
But them are both some VERY large fish for a 58G tank. You may want to re-consider that idea. But that's just my 2cents.
Actually, bushynose plecos only get about 4 1/2" long max and one would probably do fine in a 20 gallon tank. I kept 2 (male and female) in my 55 gallon and the male would chase around the female but no harm was done.
A common pleco can and will grow very large and anything smaller than a 75 gallon tank will not be good for it in the long run. Even one common pleco in a 58 gallon tank will be too much eventually.