Common name: Transparent boxfish

General information

The Longnose Boxfish, Lactoria diaphana, is a unique and visually striking species known for its distinct box-like shape and long snout. This species is part of the Ostraciidae family, which includes other boxfishes, cowfishes, and trunkfishes. The Longnose Boxfish is not as commonly kept as some other marine ornamentals, but it can be a fascinating addition to a spacious home aquarium.

Adults typically exhibit a pale yellow to brown coloration with dark spots scattered across their bodies, while juveniles often have a more vibrant yellow hue with fewer spots. Their rigid, bony carapace offers protection from predators, but it also limits their mobility compared to more streamlined fish.

Care

Longnose Boxfish require a large tank with plenty of open swimming space and a well-established filtration system due to their sensitivity to water quality. They are generally peaceful but can be territorial with their own kind or similar-looking species. It's important to note that when stressed or injured, boxfish can release a toxic substance called ostracitoxin, which can be harmful to tank mates.

A varied diet of meaty foods such as shrimp, squid, clams, and marine algae is essential for their health. They are known to graze on benthic invertebrates in the wild, so providing a diet that mimics this natural feeding behavior is beneficial.

Reproduction

In the wild, Longnose Boxfish are oviparous, with females releasing eggs into the water column to be fertilized externally by males. Breeding them in captivity is challenging and not commonly reported among hobbyists.

Habitat

Longnose Boxfish are 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 areas with plenty of live rock or coral formations that offer hiding spots and foraging opportunities.