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Longhorn Cowfish

Longhorn Cowfish

Latin Name Lactoria cornuta
Common Name Longhorn Cowfish
Also known as Longhorned Cowfish
Fast Facts PLEASE NOTE: This is a restricted species and is not covered by our live arrival guarantee.

This odd-looking longhorn cowfish makes for a fascinating display animal if you have the right captive venue, which the typical home aquarium is not. It should be housed with exceptionally passive, non-aggressive tankmates. If housed with aggressive feeders, (such as any fish that moderately active and feeds well) the Longhorn Cowfish may have trouble competing for food. Make sure you keep an eye on this fish during feeding time if kept with fish that feed well, and beware that it may never adapt if kept in such a situation. This fish will fare best if kept with docile, dissimilar fishes such as bottom dwelling fishes such as gobies, etc. Any fish that is an active swimmer and good feeder will likely put the cowfish in the position of never getting enough food. It is possible to keep more than one in the same tank (especially young individuals), but adults may quarrel. It will not usually bother other fishes. When first introduced to its new home it can be easily startled. It is not uncommon for this species to dash about the tank and may collide with rockwork or the sides of the tank. Once acclimated, this behavior will stop. It is an active species that can grow quite large with ideal care, so make sure you provide it with plenty of swimming room. Although this species is reported to have the ability to release toxins if stressed like the other trunkfishes, it is apparently less likely to do so and/or the toxin is not as lethal. This species is susceptible to Cryptocaryon and Lymphocystis. It is best not to house it with cleaner wrasses, as these wrasses will incessantly chase and try to clean them, which will result in problems. Note that the horns of this species grow shorter as the fish gets larger. The tail is longer in older specimens.

PLEASE NOTE: This is a restricted species and is not covered by our live arrival guarantee.
Sizes Small/Specimens are around .75" - 1"
Medium/Specimens are around 1.5" - 2.5"
Large/Specimens are around 3" - 4"
X-Large/Specimens are around 4" - 5"
Range in Nature Indo-Pacific
Minimum Aquarium Size 20
Diet and Feeding Carnivore, provide a varied diet that includes frozen preparations for carnivores.
Ease of Care(5=easy, 1=difficult) Suitability ratingSuitability ratingSuitability rating
Reef Aquarium Compatibility While it can be kept with large, stinging sea anemones, it is not well-suited to the reef aquarium as it is likely to eat many t
Related Fish More Boxfishes 
Availability Small/Frequently Available
Medium/Semi Regularly Available
Large/Rare, Unpredictable Availability
X-Large/Very Rare, Unpredictable Availability
Add to Cart

Longhorn Cowfish

Size Price Qty. Add
Small $14.99
Medium $24.99
Large $49.99
X-Large $79.99

Availability is not guaranteed and is subject to change without notice.  Note: Because these are living animals, and not made in a factory, actual specimens will vary and will not look identical to the image provided.  Sizes stated are approximate.

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