10 Best Algae Eaters for a Cleaner Aquarium

No algae eater replaces good tank maintenance, but the right cleanup crew makes a noticeable difference in keeping glass, décor, and plants free of nuisance growth.

1. Bristlenose Pleco

A compact member of the plecostomus family, bristlenose plecos stay a manageable size and graze constantly on algae-covered surfaces.

2. Nerite Snails

Nerite snails are excellent at clearing algae from glass and hardscape and, unlike some snail species, won’t overrun your tank since their eggs don’t hatch in freshwater.

3. Amano Shrimp

Larger and hardier than dwarf shrimp, Amano shrimp are famous for their algae-clearing appetite in planted tanks. Browse our shrimp selection.

4. Otocinclus Catfish

Tiny and peaceful, otocinclus are ideal for smaller planted tanks where a full-size pleco would be too much fish.

5. Siamese Algae Eater

One of the few species that reliably eats tougher black beard algae, Siamese algae eaters are a great choice for problem tanks.

6. Mystery Snails

Larger and more visible than nerites, mystery snails are effective grazers and come in a range of attractive colors. See our freshwater snails selection.

7. Florida Flagfish

An underrated algae eater known for tackling hair algae that many other species ignore.

8. Cherry Shrimp

While not as aggressive grazers as Amano shrimp, cherry shrimp help keep biofilm and soft algae in check in smaller planted tanks.

9. Twig Catfish

A more specialized choice, twig catfish primarily eat biofilm and soft algae on driftwood.

10. Ramshorn Snails

Prolific breeders that clean up algae and leftover food, though population control is worth planning for.

Remember: Prevention First

Controlling light duration and nutrient levels (see Understanding Aquarium Water Parameters) prevents most algae problems before they start — algae eaters are a helpful supplement, not a substitute.