They hold on to fixed objects using a sucker-like mouth, and, despite the name, feed on a wide range of detritus, rather than simply on algae.

[5] A "golden" variety of G. aymonieri, the Chinese algae eater or "sucking loach", can be found in many pet shops and fish farms.

It can range up to 11 inches (280 mm) in length and has a reputation for becoming increasingly territorial as it matures, and can also be aggressive to other fish, especially slow, flat-bodied species.

In the home aquarium, the Chinese algae eater generally makes a poor tank mate.

It can be very boisterous, and when improperly fed, has been known to attack other fish and rip off scales, causing infection.