How to Reduce Cichlid Aggression

The approximately 1,400 species of cichlids, which include oscars, angelfish and Jack Dempsey fish, live in various environments throughout the world, including Africa, North America and South America. Many aquarium owners are faced with the dilemma of introducing their cichlid into an aquarium only to have the fish become aggressive with its tank mates, which could result in injury or the death of the other fish. There are several ways to reduce your cichlid's aggression to keep the peace in your aquarium

Things You'll Need

  • Large tank
  • Fish food
  • Hiding places
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Instructions

    • 1

      Choose tank mates that are similar in size and personality to cichlids. For instance, if you have an aggressive oscar in your tank, keep it with another similar-sized angelfish or Jack Dempsey. Avoid keeping the cichlid with a smaller, more timid species of fish.

    • 2

      Provide the cichlid with a large enough tank. Part of the cichlid's aggressive nature comes from its natural territorial instincts. A tank that is at least 20 gallons will ensure that the cichlid can find a space to claim for itself.

    • 3

      House at least three female cichlids for every one male in the aquarium. This will ensure that the cichlids do not become aggressive because they are fighting for the attention of a single female.

    • 4

      Provide the cichlids with adequate food. Cichlids become aggressive when they are underfed because they will fight for what food is available. To ensure that the cichlids remain docile, feed them small amounts throughout the day.

    • 5

      Lower the temperature of the tank slightly. An ideal temperature for cichlids is between 76 and 84 degrees Fahrenheit. Lowering the temperature to the smaller numbers in this acceptable range will make the cichlids less active and less aggressive.

    • 6

      Provide the cichlids with several places to hide, including enclosures, plants and rocks. The cichlids will begin to feel threatened when they are butting heads with their tank mates and have no place to hide. Giving the cichlids somewhere to flee will give them an alternative to fighting.