Yellow Boxfish

Yellow Boxfish

The Yellow Boxfish are usually discovered within the reefs of the Indo-pacific, and most commonly in the lower current waters. When juvenile, this fish holds a form that is effortlessly recognised as it holds a yellow cube shaped body with brown polka dots. However, as it matures, its yellow body will dull and evolve into a brownish colour. 

It must be noted prior to purchasing this fish that it can be extremely challenging to keep happy in the home aquarium, as most experienced aquarists state it this can only be done when housed with peaceful and less active fish. Furthermore, this fish also needs to be housed in a relatively large aquarium, of about a minimum area of 300 litres. Furthermore, caution needs to be taken when adding this fish to your tank if you are looking to maintain tubeworms, as this fish is known to eat them. 

However, it must be acknowledged that the Yellow Boxfish has poisonous skin, and when it is threatened, it can be known to ex-spell toxins that can cause critical  damage to other fish in the tank. Furthermore, it is important to consider that these fish are very cautious eaters and do take their time, so issues may occur if it is housed with more aggressive and active eaters. 

When the Yellow Boxfish is first added to the tank, it has been said that it sometimes only eats live brine shrimp. However, once it has settled and is now acclimated, their diet should include a range of vegetable and meaty foods, as this fish is an omnivore. 

Minimum Tank Size: 300 Litres
Care Level: Expert Only
Temperament: Semi-aggressive
Reef Compatible: With Caution
Water Conditions: 72-78° F, dKH 8-12, pH 8.1-8.4, sg 1.020-1.025
Max. Size: 1' 6"
Colour Form: Blue, Green, Tan, Yellow
Venomous: Poisonous When Stressed or Dies
Diet: Omnivore
Family: Ostraciidae
Origin: Indo-Pacific

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Easy to Care For
Easy to Feed
Peaceful with Others
Reef Safe
Invertebrate Safe

  1. My boxfish is actually reef safe. However they can be difficult to feed due to there small mouths and slow movement, if you have fast fish i.e. tangs then make sure it gets plenty of food. They need feeding 3-4 times a day. IMHO well worth the trouble, they are stunning

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