Common name: Shortnose boxfish

General information

The Longnose Boxfish, scientifically known as Rhynchostracion nasus, is a distinctive and charismatic species popular among marine aquarists. Its unique box-like shape, bright colors, and curious behavior make it a fascinating addition to a saltwater aquarium. This species is known for its rigid, bony carapace which provides protection from predators. The Longnose Boxfish is a slow swimmer and uses its pectoral fins for precise movements in the water.

Care

Longnose Boxfish require a spacious tank with plenty of room to swim and stable water conditions. They are sensitive to water quality, so regular water changes and efficient filtration are essential. This species is generally peaceful but can be territorial with its own kind. It's best to keep them singly unless the aquarium is large enough to support multiple individuals with ample space to avoid aggression. They feed on a variety of foods, including small invertebrates, algae, and prepared foods.

Reproduction

Breeding Longnose Boxfish in captivity is quite challenging and rarely occurs. In the wild, they are oviparous, with females releasing eggs into the water column to be fertilized externally by the male. The eggs then drift as part of the plankton before hatching into larvae.

Habitat

Rhynchostracion nasus is found in the Indo-Pacific region, from the Red Sea and East Africa to the central Pacific. They inhabit coral reefs and lagoons, often seen at depths ranging from shallow waters to about 50 meters. They prefer reef environments with plenty of hiding spots and live rock to graze on biofilm and small organisms.