Aquarium Care
In the aquarium, bottom feeders are popular as it is perceived that they will "clean up" the tank. Generally, they are only useful for consuming the extra (fresh) food left by overfed or clumsy livestock; the added biomass of additional organisms means that the aquarium will likely be more dirty. Some specialized bottom feeders are more specifically sold as "algae eaters" to increase the amount of free oxygen and aesthetic appeal of a tank.
Read more about this topic: Bottom Feeder
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—Robert Lowell (1917–1977)
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