The Brackish Aquariumin General

Corals & Sessile Invertebrates

Marine Fish
Marine Inverts
Marine Plants

Minimum Tank Size – The minimum tank size for a Longhorn cowfish would be a 135 gallon tank. They will most likely be more comfortable in a large aquarium. Young cowfish can be kept in smaller aquariums for short periods of time. But eventually you will need to meet the requirements of the minimum tank size stated above.

Aquarium Environment – Longhorn cowfish can be found in coral reefs or swimming around areas of sea grass. They tend to be a solitary species as they mature so make sure to only have one Longhorn cowfish per tank. Be sure to include some live rock in the tank also as it helps preserve water quality and your cowfish will enjoy searching for food on it. Make sure not to have boisterous or aggressive tank mates that could irritate your cowfish and possibly make him release poisonous ostracitoxin. Be sure to make your cowfish’s tank entertaining so he will not get bored. A sign of boredom may be swimming up and down the sides of the aquarium.

Other – Your Longhorn cowfish may or may not go after corals or other inverts, if you value your precious inverts you may want to test them out with an inexpensive coral or other invert.

Longhorn Cowfish (Lactoria cornuta)
Longhorn Cowfish Stats
Minimum Tank Size: 135 gallons
Care Level: Moderate
Temperament: Peaceful
Reef Compatible: With Caution
Water Temperature: 74-78° F
Max. Size: 18"
Color Form: Yellow
Diet: Omnivore
Origin: Indo-Pacific
Family: Ostracidae