Ostracion cubicus (yellow boxfish)
The Boxfish - Ostracion cubicus, better known as the yellow trunkfish or boxfish, is a striking addition to any marine aquarium. With its distinctive cube-shaped body and vibrant yellow color, the...
The Boxfish - Ostracion cubicus , better known as the yellow trunk or boxfish, is a striking addition to any marine aquarium. With its distinctive cube-shaped body and vibrant yellow color, this fish is not only an eye-catcher but also a fascinating species to keep. This species is beloved by experienced aquarists for its unique appearance and interesting behavior.
Characteristic appearance and behavior
The Boxfish stands out immediately due to its bright yellow color and the black spots scattered over its body. Its distinctive, angular body shape makes it unique in the marine aquarium. It is a peaceful fish that generally gets along well with other non-aggressive species.
- Unique cube shape and striking colors
- Peaceful nature, suitable for community aquariums
- Moves calmly through the aquarium
Care and nutrition
The Ostracion cubicus requires a stable and well-set-up marine aquarium. Ensure there are sufficient hiding places among the live rock and a gentle current. Boxfish are omnivores and eat both animal and plant matter. Vary the diet for optimal health.
- Minimum recommended aquarium size: 300 liters
- Diet: frozen food, Artemia, Mysis, Spirulina and special boxfish food
- Regular water changes and stable water values are essential.
Why choose the Boxfish?
This species is a true eye-catcher in the marine aquarium and offers a unique addition to the fish population. Moreover, the Boxfish is relatively easy to care for for the experienced aquarist, provided the right conditions are met. Please note, however: this fish can release a toxic substance when stressed. A stable aquarium and peaceful tank mates are therefore important.
- Ideal for lovers of unusual saltwater fish
- Brings color and character to the aquarium
- Combines well with other peaceful fish
Important points to consider
- Suitable for marine aquariums of 300 liters or more.
- Do not combine with aggressive species or anemones
- Ensure there are sufficient shelter options.
- Only suitable for experienced aquarists
Would you like to enrich your marine aquarium with a unique and colorful fish? The Boxfish - Ostracion cubicus is a wonderful choice for the serious marine aquarist looking for something special. Order now and give your aquarium a striking eye-catcher!

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Ocean Store
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Above € 50,- free delivery in NL & BEIn stock Ordered before 16:00, shipped today *
The Boxfish - Ostracion cubicus, better known as the yellow trunkfish or boxfish, is a striking addition to any marine aquarium. With its distinctive cube-shaped body and vibrant yellow color, the...
Ocean Store
Ocean Store
Ocean Store is a modern webshop with a large selection of reef aquarium equipment, supplements and food for your (marine) aquarium. We excel in reachability, service and speed. Not only in delivery of your ordered goods, but also in the adequate answering of your (marine) aquarium related questions. We are happy to share our passion for reef aquariums with you!
Open: Available Monday / Friday 9:00-20:00
Phone: +31(0)78-6456669
€ 0.99 - € 2999.99
EUR
479190
The Boxfish - Ostracion cubicus, better known as the yellow trunkfish or boxfish, is a striking addition to any marine aquarium. With its distinctive cube-shaped body and vibrant yellow color, the...
Ocean Store
Ocean Store
Ocean Store is a modern webshop with a large selection of reef aquarium equipment, supplements and food for your (marine) aquarium. We excel in reachability, service and speed. Not only in delivery of your ordered goods, but also in the adequate answering of your (marine) aquarium related questions. We are happy to share our passion for reef aquariums with you!
Open: Available Monday / Friday 9:00-20:00
Phone: +31(0)78-6456669
€ 0.99 - € 2999.99
EUR
479190
The Boxfish - Ostracion cubicus, better known as the yellow trunkfish or boxfish, is a striking addition to any marine aquarium. With its distinctive cube-shaped body and vibrant yellow color, the...
Ocean Store
Ocean Store
Ocean Store is a modern webshop with a large selection of reef aquarium equipment, supplements and food for your (marine) aquarium. We excel in reachability, service and speed. Not only in delivery of your ordered goods, but also in the adequate answering of your (marine) aquarium related questions. We are happy to share our passion for reef aquariums with you!
Open: Available Monday / Friday 9:00-20:00
Phone: +31(0)78-6456669
€ 0.99 - € 2999.99
EUR
479190
The Boxfish - Ostracion cubicus, better known as the yellow trunkfish or boxfish, is a striking addition to any marine aquarium. With its distinctive cube-shaped body and vibrant yellow color, the...
Ocean Store
Ocean Store
Ocean Store is a modern webshop with a large selection of reef aquarium equipment, supplements and food for your (marine) aquarium. We excel in reachability, service and speed. Not only in delivery of your ordered goods, but also in the adequate answering of your (marine) aquarium related questions. We are happy to share our passion for reef aquariums with you!
Open: Available Monday / Friday 9:00-20:00
Phone: +31(0)78-6456669
€ 0.99 - € 2999.99
EUR
479190
The Boxfish - Ostracion cubicus, better known as the yellow trunkfish or boxfish, is a striking addition to any marine aquarium. With its distinctive cube-shaped body and vibrant yellow color, the...
Ocean Store
Ocean Store
Ocean Store is a modern webshop with a large selection of reef aquarium equipment, supplements and food for your (marine) aquarium. We excel in reachability, service and speed. Not only in delivery of your ordered goods, but also in the adequate answering of your (marine) aquarium related questions. We are happy to share our passion for reef aquariums with you!
Open: Available Monday / Friday 9:00-20:00
Phone: +31(0)78-6456669
€ 0.99 - € 2999.99
EUR
479190
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