Problems With Sucker Fish

Sucker fish or algae eaters are often considered the cleaners of the aquarium ecosystem. Providing a proper environment for these unique fish does much to ensure their good health.

  1. Size

    • Two common varieties of sucker fish can both become aggressive and territorial as they mature. The Chinese algae eater may peak at 10 centimeters length, but the Plecostomus catfish may reach 18 inches and require at least a 55-gallon tank.

    Changing Diets

    • When small, sucker fish may subsist entirely on algae growing within the aquarium. As these fish age they may require more food than the tank supplies and may need supplements like algae or shrimp pellets.

    Cleanliness

    • Sucker fish will not solve all the problems of a dirty tank. Overfeeding and lack of proper filtration will sicken these fish as well as the other species who share the aquarium.

    Hiding Places

    • Sucker fish are often reclusive in habit and need places to shelter. If those are not provided as aquarium decorations, algae eaters may dig holes in the aquarium gravel and uproot plants.

    Aggression

    • Older sucker fish become protective of their home areas and are especially aggressive toward other sucker fish. Although problems are not guaranteed, any other fish similar in shape are at risk of attack.