Common name: Horn-nosed boxfish

Scientific name: Ostracion rhinorhynchos Bleeker, 1851
A Horn-nose Boxfish (Ostracion rhinorhynchos) swimming underwater

General information

The Humpback Turretfish, scientifically known as Ostracion rhinorhynchos, is a distinctive boxfish species known for its unique body shape and coloration. It has a humpbacked appearance and a protruding snout, which gives it a camel-like profile, hence the alternative common name, Camel Cowfish. This species is not as commonly kept as some other boxfish due to its size and specific care requirements.

Details

Recommended minimum tank volume
300 liter (79 gallons)
Salinity
S.G. 1.022 to 1.025
Temperature
22 to 26 °C (72 to 79 °F)
Acidity
pH 8.1 to 8.4
Average size
25 cm (10″)
Care level
Moderate to easy Needs hiding spots & stable water
Diet
Omnivore Varied diet incl. meaty foods & algae
Social
Solo Can be territorial, best kept alone
Reefsafe
Yes
Aggression
Semi aggresive May nip at slow-moving fish
Captive bred
No
Conservation statusSource: IUCN Red List
ExtinctThreatenedLeastConcern

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Ray-finned Fishes
    Actinopterygii
  4. Order
    Pufferfish
    Tetraodontiformes
  5. Family
    Boxfish
    Ostraciidae
  6. Genus
    Boxfish
    Ostracion
  7. Species
    Horn-nosed boxfish
    Ostracion rhinorhynchos Bleeker, 1851
  8. Synonyms
    Ostracion rhinorhynchus Bleeker, 1851
    Ostracion rhinorhynchus bleeker , 1852
    Ostracion rhynorhyncus Bleeker, 1851
    Rhynchostracion rhinorhynchos (Bleeker, 1851)
    Rhynchostracion rhinorhynchus (Bleeker, 1851)

Care

Humpback Turretfish require a spacious aquarium with plenty of room to swim and stable water conditions. They are not recommended for beginners due to their sensitivity to water quality and potential to release toxins when stressed or if they perish in the aquarium. A varied diet of meaty foods, including shrimp, squid, and clams, is essential for their health.

Reproduction

In the wild, Ostracion rhinorhynchos has a complex mating ritual involving courtship displays. Breeding in captivity is rare and not well-documented, making it a challenge for aquarists.

Habitat

Native to the Indo-Pacific region, Humpback Turretfish are found in coral reefs and sandy bottoms, often at depths ranging from shallow waters to about 50 meters. They are solitary creatures and have a wide distribution from the east coast of Africa to the western Pacific Ocean.