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The Longhorn Cowfish, also known as Lactoria cornuta, is a unique and fascinating addition to any saltwater aquarium. They are known for their distinct box-like shape and protruding "horns," which give them their name.


Longhorn Cowfish can grow up to 20 inches in length and require a minimum tank size of 180 gallons. They are generally peaceful, but can become aggressive towards other fish if they feel threatened or overcrowded. It's best to keep them in a species-specific tank or with other larger, non-aggressive fish.


These omnivorous fish require a varied diet, including a mix of meaty foods, such as shrimp, squid, and krill, and plant-based foods, such as seaweed and algae. It's important to provide a balanced diet to ensure they receive all the necessary nutrients for optimal health.


The Longhorn Cowfish's unique characteristic is their box-like shape and protruding "horns," which make them stand out in any aquarium. They are also known for their ability to produce a toxin called ostracitoxin, which they use to deter predators.


Water Parameters:

  • pH: 8.1-8.4
  • Salinity: 1.020-1.025
  • Temperature: 72-78°F


Please note that these are general guidelines, and for more accurate values, we encourage you to contact Living Aquarium by phone or in person. Within store hours, our team of experts are always happy to answer any questions you may have and provide personalized guidance on care.

Long Horn Cowfish

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