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![Yellow Cubicus Boxfish (Ostracion cubicus) - tiny](https://www.saltyunderground.com/8141-large_default/yellow-cubicus-boxfish-ostracion-cubicus.jpg)
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The Yellow Cubicus can grow up to almost 2 feet and will require an aquarium of at least 150 gallons with plenty of room to swim. The Cubicus in juvenile form is easy to identify as having a yellow box-shaped body with brown spots. Adults the Yellow fades and becomes more brown. Their diet consists of mysis, brine, bloodworms, and other meaty foods.