lucky duck... i have never seen them in my area...They do when they're little and before the get really agressive and they keep algae off of my deco's. I do not like these fish per say but the little ones will clean a bunch. I was mearly pointing out the solution for the pleco as stated above was how I deal with my choice of using CAE's for algae. I now have 2 American flag fish for algae.
i have seen what the little ones can do to an algea-ridden tank, but every fish is different and one that eats algea for a long time could snap at any time.