Common name: White-spotted puffer

General information

The Hawaiian Sharpnose Puffer, scientifically known as Canthigaster jactator, is a small and colorful pufferfish endemic to the Hawaiian Islands. It is recognized by its distinctive blue lines and spots against a light background, which can range from white to yellowish. This species is part of the family Tetraodontidae, which includes all pufferfishes known for their ability to inflate their bodies as a defense mechanism against predators.

In the wild, C. jactator is often found in shallow reef environments where it feeds on a variety of benthic invertebrates, algae, and sometimes coral polyps. Its beak-like teeth are well adapted for crushing hard-shelled prey.

Care

Hawaiian Sharpnose Puffers are considered moderately difficult to care for in the home aquarium due to their specific dietary and tank requirements. They are best suited for intermediate to experienced aquarists. A tank of at least 120 liters is recommended to provide ample swimming space. These puffers are generally peaceful but can be territorial, so they should be housed with compatible tank mates and provided with plenty of hiding places.

Their diet should include a variety of meaty foods such as shrimp, squid, clams, and mussels, as well as some hard-shelled foods to help wear down their ever-growing teeth. It is important to avoid overfeeding as they are prone to obesity.

Reproduction

Reproduction of Canthigaster jactator in the home aquarium is rare. In the wild, they are known to form monogamous pairs during the breeding season. The female lays eggs on the substrate, which are then fertilized by the male. The parents do not tend to the eggs after spawning.

Habitat

The Hawaiian Sharpnose Puffer is found exclusively in the Hawaiian archipelago. It inhabits coral reefs and rocky outcrops, typically at depths ranging from the shallows down to about 45 meters. This species is often observed in pairs or small groups, darting among the corals and rocks.