Pleco, or plecostomus. See
http://www.fishpondinfo.com/pleco.htm

The theory is that if you say its name, yours will
die. I can say it, since I don't have any. YMMV.

DT
(Hope I didn't jinx anybody else's pl*cos by proxy!)

Mine has since cleaned the 55. I can't believe how much algae one of these
guys can eat. Tomorrow he goes back to his own tank till it grows back and
the rotation starts again. ) ~ jan

~ jan/WA
Zone 7a