This article is from the Aquaria: Good (and Bad) First Fish; Breeding FAQ, by Dean Hougen and Elaine Thompson
Chinese Algae Eaters - Gyrinocheilus aymonieri are often introduced
into the aquarium to do what their common (sales) name implies - eat
algae. They are usually seen at a small size and many die within a
short time of purchase. If they live, however, they get big (up to a
foot long) and tend to prefer to rasp at the sides of slow moving fish
(making them susceptible to infections) to eating algae.
 
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