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The Yellow Boxfish is a unique and interesting addition to any aquarium. These fish are small in size, averaging around 3 inches in length, with a maximum size of 5 inches.


To keep these fish healthy and happy, a minimum tank size of 125 gallons is recommended. They prefer to live in pairs or small groups, but it's important to note that they can become territorial towards other boxfish or fish with similar body shapes.


The Yellow Boxfish has a peaceful temperament, but they can release a toxic substance when stressed or threatened, which can harm other fish in the tank. Therefore, it's important to keep the water quality in check and avoid sudden changes in the tank environment.


The Yellow Boxfish is rated as a "Challenging" fish to care for out of three options, which means they require advanced care and attention to maintain. They are not recommended for novice aquarists.

These fish are omnivorous and will eat a varied diet consisting of flakes, pellets, frozen or live food. However, they have a tendency to eat a lot and can quickly become overweight, leading to health issues.


The Yellow Boxfish originates from the Indo-Pacific region, particularly in the Red Sea and the coasts of East Africa.


In terms of coloration, the Yellow Boxfish is bright yellow with a square-shaped body and a small mouth. They have large, bulging eyes and a pair of long, sharp spines on each side of their body.


Water Parameters:

  • pH: 8.1 - 8.4
  • gH: 8 - 12
  • kH: 2 - 5
  • TDS: 400 - 450 ppm
  • Temperature: 75 - 82°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.

Yellow Boxfish

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