Questions about some algae eaters

> From: Liisa Sarakontu <lsarakon at hila_hut.fi>
> Bristlenoses, Ancistrus spp.
> I have heard from the net and from my friends that they eat all the 
> plants, especially Swords. Again, I have three small Bristlenoses 
> and I have never found any holes in the leaves of my Sword plants.
> They eat Limnobium and Duckweed, but those are meant as fishfood anyway.
> What is the opinion of them here? Nice algae eaters or damned plants
> munchers?
We have noted damage to some broad leafed plants like E. bleheri and
Armoracia aquatica that we attribute to the small plecos.  They seem
to scrape the surface and damage the epidermis of tender plants.  No
problems with Anubias sp. or Java Ferns.