I am trying to find a pleco that would do well in a 20 tall with mid-level schooling fish and eat algae in the tank. I started by looking at a couple of sites that sell smaller ones since there are generally only common plecos available locally, and came up with the following potential list. In coming up with this list I added all the ones that I liked the look of, then removed any that got to over 6 inches or were strictly carnivores as listed at planetcatfish.com L-02 Clown Pleco Flash Pleco L-204 (Panaque sp.) Red Spot Pleco LDA-31 (Panaque Albomaculatus) L-333 Pleco All of these are at AquaScapeOnline www.aquascapeonline.com/prodList.asp?idCategory=86 . I also looked at LiveAquaria, PetSolutions, and ArizonaGardens, but came up empty, at least for their in stock ones since I don't like Bushynose/Bristlenose or Rubbernose and the clown pleco is a repeat. Any help would be appreciated, whether its adding to or removing one from my potential list, under the conditions that it has to be small enough for a 20, easy to buy, be $30 or under, and eat algae, but it gets to be the only bottom dweller with its own cave.