Saltcorner
By Bob Goemans
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Acanthostracion

Acanthostracion quadricornis

(Linnaeus, 1758)

Scrawled Cowfish

Not Reef Tank Suitable

Likely Fish-Only Tank Suitable

Range: Atlantic Ocean: Massachusetts to southeastern Brazil, and the Gulf of Mexico.

Size: 18 inches (45 cm)

Natural Environment: Inhabit shallow water areas over grass flats and usually found at depths between 10 – 100 feet (3 – 30 m) where it feeds on benthic invertebrates, crustaceans, algae/sea weed, sea squirts, sponges and worms.

General Husbandry: Rarely seen in the trade, having a pale yellowish-tan body with irregular dark blue markings and horns over the eyes.

Best maintained in large fish-only aquariums having wide-open swimming areas and slow moving and very peaceful tankmates.

Requires a varied diet containing both meaty and vegetable matter and should be fed several times daily.

Taxonomy:

    Order: Tetraodontiformes

    Suborder: Tetraodontoidei

    Family: Ostraciidae

    Genus: Acanthostracion

FYI: A slow moving fish, therefore, it should not be housed with fast moving and/or fin-nipping fishes.

Will eat snails and ornamental shrimp.

One per aquarium.

Do not offer floating foods, as this species may ingest air and cause buoyancy problems.

May consume cyanobacteria/slime algae and other types of macro and microalgae.

May nip soft and stony corals, and clam mantles.

When excited or threatened can release a toxin (ostracitoxin) that may kill other fish.

Always remove a specimen if it's being picked on or in bad health.

Experience Level: Expert

Temperament: Peaceful

Diet: Omnivore

Coral Safe: No

Fish Safe: Yes

Invertebrate Safe: With caution

Acclimation Time: 30 minutes+

Aquarium Environment: Fish-only aquarium

Tankmates: Peaceful

Minimum Tank Size: 250 gallons

Temperature Range: 72 - 79°F (22 – 26°C)

Specific Gravity: 1.020 - 1.026

pH: 8.0 - 8.5

 Acanthostracion quadricornis (Scrawled Cowfish)
Photo © John Randall
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RedSea