Common name: Trunkfish
General information
The Longhorn Cowfish, Acanthostracion quadricornis, is a distinctive and charismatic species known for its unique box-shaped body and long horns protruding from the front of its head. These horns have given rise to its common name and make it a fascinating addition to any marine aquarium. The Cowfish is part of the Boxfish family and is covered in a hard carapace of fused scales that provides protection from predators.
In the wild, these fish are found in a variety of reef environments, often in shallow waters. They are omnivorous and have a diet that includes small invertebrates, algae, and sponges.
Details
- Recommended minimum tank volume
- 300 liter (79 gallons)
- Salinity
- S.G. 1.020 to 1.025
- Temperature
- 22 to 26 °C (72 to 79 °F)
- Acidity
- pH 8 to 8.4
- Average size
- 45 cm (1′6″)
- Care level
- Moderate to easy Needs hiding spots & varied diet
- Diet
- Omnivore Enjoys mysis, brine shrimp, algae
- Social
- Solo Can be territorial, best kept alone
- Reefsafe
- No May nip at inverts & corals
- Aggression
- Semi aggresive May show aggression to tank mates
- Captive bred
- No
Taxonomy
- KingdomAnimalsAnimalia
- PhylumChordatesChordata
- ClassRay-finned FishesActinopterygii
- OrderPufferfishTetraodontiformes
- FamilyBoxfishOstraciidae
- GenusCowfishAcanthostracion
- SpeciesTrunkfishAcanthostracion quadricornis (Linnaeus, 1758)
- SynonymsAcanthostracion tricornis (Linnaeus, 1758)Lactophrys quadricornis (Linnaeus, 1758)Lactophrys tricornis (Linnaeus, 1758)Ostracion quadricornis Linnaeus, 1758Ostracion tricornis Linnaeus, 1758
Care
Cowfish require a spacious tank with plenty of room to swim and stable water conditions. They are sensitive to poor water quality and rapid changes in their environment. A varied diet that mimics their natural food sources is essential for their health, including a mix of meaty foods and vegetation.
Due to their unique body shape, Cowfish are not the most agile swimmers and should be housed with peaceful tank mates that will not outcompete them for food or stress them with aggressive behavior.
Reproduction
In the wild, Cowfish are solitary creatures and come together only to breed. Breeding in captivity is rare, and little is known about their reproductive habits in home aquariums.
Symbiosis
While Cowfish do not have specific symbiotic relationships like clownfish with anemones, they are part of the reef ecosystem and contribute to its diversity and balance.
Habitat
Longhorn Cowfish are typically found in the Indo-Pacific region, from the Red Sea and East Africa to the central Pacific. They inhabit lagoons and coral reefs, often at depths ranging from 1 to 50 meters. They are known to frequent seagrass beds and rubble slopes where they can forage for food.