07-14-2014, 10:10 PM
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Yes Bristlenose Plecos would do great in a 20 gal. If your LFS gets any, give it a shot. I absolutely love mine, unfortunately (as I just recently learned) only the males have bristles!! The one I got turned out to be female( no bristles) and my LFS only sells unsexable juveniles, it was less than 1 inch when I got her, 6 months later, about 3 inches. And yes, like all Plecos, they do fine by themselves as they are not a "schooling" fish. As far as the Bolivian Rams, the pair I got were only $7.50 each, and they are fairly hardy, even more so than neons (IME). It is the German Blue and Electric Blue Rams that are far more demanding about water quality (soft, acidic water, PH 6.0-6.5) mine are thriving in extremely hard water, PH 8.0., its all about water stability, like all fish.