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Longhorn Cowfish (Lactoria cornuta)

Find Longhorn Cowfish across reef-livestock retailers on ReefDock. Compare sources, check known pricing where available, and review care information before you buy.

Longhorn Cowfish
Photo: Fernando Losada Rodríguez · CC BY-SA 4.0
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Where to buy Longhorn Cowfish

ReefDock searches the following reef retailers for this fish. Click through to see the live price.

  • Saltwaterfish

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    Search Saltwaterfish
  • Amazon

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    Search Amazon
  • Petco

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    Search Petco

About Longhorn Cowfish

Yellow body with white-edged blue spots and distinctive horn-like projections above the eyes and at the rear of the body. The boxy, rigid frame and defensive spines make it instantly recognizable.

Key facts

Care Requirements
• Minimum 75-gallon aquarium; 100+ gallons preferred for long-term care • Stable water parameters: 72-78°F, pH 8.1-8.3, specific gravity 1.020-1.025 • Produces toxic mucus when stressed; excellent filtration and water quality essential • Non-aggressive but territorial; keep singly or with very compatible species • Feed varied diet of small crustaceans, frozen foods, quality pellets
Common Health Issues
Marine Ich, Fin Rot, Swim Bladder Disease, Bacterial Infections, Parasitic Infestations
Min tank size
75 gallons
Diet
omnivore
Feeding Schedule
2-3 times daily
Origin
Indo-Pacific region from the Red Sea to Hawaii, including Indonesia, Philippines, and Great Barrier Reef.
Reef safety
Not Reef Safe
Temperament
Peaceful
Care Level
Expert
Family
Ostraciidae
Difficulty Level
Moderate - Requires some experience due to specific dietary water or tank requirements. Best suited for intermediate aquarists.
Diet Details
Feed a varied diet including small crustaceans (mysis shrimp, copepods), small mollusks, and quality flaked foods. Offer food 2-3 times daily in small portions. Avoid overfeeding to maintain water quality.

Research before you buy

ReefDock is the sister app to Reef Trak. Use Reef Trak to research and log fish, keep tank parameters organized, and maintain a complete livestock history. Log this fish on Reef Trak.

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