Free Next Day Delivery

Free next day delivery on orders over €150

Learn More


Step by step
guide to
purchasing online.

Learn More


We go the
extra mile
...see how.

Learn More

Acclimation Guide

How to introduce new fish to your tank.

Learn More

Premium Selection

Odd balls and
unique livestock.

Learn More

Long-Horned Cowfish

Please call in-store before purchasing any livestock (including corals and plants), as we may or may not have them in stock depending on availability and season. Please note that prices may vary depending on the available sizes and specific species in-store.

(Lactoria Cornuta)

Your Price: €55.00

Available Options:




In Stock



The Cowfish Longhorn inhabit the reefs of the Indo-Pacific, usually in the less turbid waters. The body is yellow and covered with white dots, and is occasionally referred to as the Yellow Boxfish; however, the Longhorn is not to be confused with Ostracion cubicus, commonly called the Yellow or Polka Dot Boxfish.

In the wild, it is not uncommon to see a 20" specimen, while in the aquarium the Cowfish Longhorn tends to be dramatically smaller - 40cm or less.

When possible, the Cowfish Longhorn should be the first fish introduced in the tank. It is intolerant of other Longhorns, so keep it in a large tank, with some live rock for algae scraping.

Use caution if placing the Cowfish Longhorn in a reef tank as it may nibble on tubeworms. When housed correctly, the Cowfish Longhorn is long-lived.

Similar to other boxfish, the Cowfish Longhorns skin is poisonous and, when threatened, it will release a toxin lethal to other tank members, including other Longhorns. Seahorse Aquariums Ltd. cannot accept responsibility for any loss that may occur should this animal poison the aquarium.

Since they are omnivores, the Cowfish Longhorn should be offered a variety of meaty and vegetable foods. They are slow eaters, and should not be housed with aggressive eaters.

Customer Reviews

This product has not yet been reviewed.

Write a Review

Please login or register to write a review for this product.

You may also be interested in:

Brown Sailfin Tang
Brown Sailfin Tang
Cuban Hogfish
Cuban Hogfish
Ignitus Anthias
Ignitus Anthias
Neon velvet Damsel
Neon velvet Damsel
Black-Saddled Toby
Black-Saddled Toby
Lyretail Hogfish
Lyretail Hogfish
Juwel Lido 120 Black Aquarium
Juwel Lido 120 Black Aquarium
Desjardins Sailfin Tang
Desjardins Sailfin Tang

Loyalty Points

Shop and earn
free livestock.

Learn More


See what
mix together.

Learn More

Contact Us


Tel. 01 459 5650
View our locations & Map


Tel. 091 764 563
View our locations & Map


Learn More

Arrive Alive

48 hours Guarantee - If your fish, coral, plant, or invertebrate doesn't arrive alive and stay alive for 48 hours, we'll credit your account or refund your money.

Learn More

Terms & Conditions   |   Privacy Policy   |   Site index   |   © 2012