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Yellow Cubicus Cowfish

Yellow Cubicus Cowfish

Live Saltwater 28.99
Description In Stock Item Number Price Quantity
Small 9994323 28.99 OutOfStock Pets > Fish > Aquariums & Bowls 0
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Medium 9994324 34.99 OutOfStock Pets > Fish > Aquariums & Bowls 0
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Large 9994325 45.99 OutOfStock Pets > Fish > Aquariums & Bowls 0
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Marshall Islands Small 9993527 44.99 OutOfStock Pets > Fish > Aquariums & Bowls 0
Marshall Islands Small
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Scientific Name: Ostracion cubicus
Ease of Care: Difficult
Approximate Arrival Size: Small: 1" to 2"; Medium: 2" to 3"; Large: 3" to 5"
Approximate Full Size: 16 inches
Temperament: Semi-Aggressive
Diet: Omnivore
Reef Safe: No

This fish requires special care and is traditionally difficult to keep. It is, therefore, recommended only for the advanced aquarist or for aquatic research facilities.

Yellow Cubicus Cowfish, Ostracion cubicus, is beautiful, but it requires specialized care for successful captive livelihood. Of utmost importance, this fish must be kept with peaceful aquarium mates that will not cause undue stress. Larger aquariums with moderate-to-low aquarium populations and moderate-to-low water flows suit it best. Cowfish are not assertive eaters, so they should not be housed with fish that will eat the food before the Cowfish has received adequate nourishment. As an omnivore, herbivorous side of its diet must be supplemented with seaweed sheets or other vegetable preparations. All foods must be fed below the aquarium surface. Floating foods may cause the fish to gulp air, thus causing potential problems with balance and buoyancy. Also known as the Yellow Boxfish, younger specimens are a brilliant yellow that is sometimes nearly fluorescent. This coloration does mellow with age as this fish reaches more mature sizes. In the wild, it can reach 16 inches, thus explaining its requirement for frequent feedings of at least three times per day. Be careful not to overfeed so as to adversely affect water quality. In the home aquarium, specimens in the size range from eight to ten inch maximums are more commonplace than those of a foot or greater. For the aquarist willing to devote extra time to allot time for the correct care and the willingness to furnish a proper environment, keeping a Yellow Cubicus can be a highly rewarding experience.

When this fish is in duress (or upon expiration), it emits toxins that can harm or kill aquarium mates. Because these toxins may be excreted during shipment, it is extremely important to follow all steps in the PETSOLUTIONS Tried & True Acclimation Procedure. Water from the acclimation bag must never enter the destination aquarium.

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Live Orders placed before 11:30 AM ET ship same day. If an order is placed that contains Saltwater Items (Saltwater Fish, Corals, Live Rock, and/or Invertebrates) with Freshwater Fish/Live Aquarium Plants, Dry Goods, Frozen Foods, Reptiles, or Live Pond Plants, the order will be split into separate orders, and you will be charged separate shipping rates for each order. Read more.
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PetSolutions Blog
We have created our Acclimation Guide in order to provide a guide for getting your fish, corals or plants settled into their new home. We strongly recommend you read the guide that applies to your order before unpacking your fish from the box. Read more.

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