| Arothron | |
|---|---|
| Narrow-lined puffer (Arothron manilensis) | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Division: | Teleostei |
| Order: | Tetraodontiformes |
| Family: | Tetraodontidae |
| Subfamily: | Tetraodontinae |
| Genus: | Arothron J. P. Müller, 1841 |
| Diversity | |
| 14 species | |
Arothron is a genus of pufferfish that belongs to the family Tetraodontidae. Arothron species inhabit coastal waters, with the exception of A. firmamentum. While they are highly toxic due to the presence of tetrodotoxin, several species are eaten in Japan. Arothron species are sometimes kept in aquaria.
They have a wide range of distribution being found in warm parts of the Atlantic, Indian and Pacific Ocean.

The oldest described specimens of this genus are dated to the early Pleistocene epoch around 1.95-1.35 million years ago. They were uncovered in the Liuchungchi Formation in southern Taiwan. They are semi-articulated specimens with nearly complete skulls that show characteristic beak-like jaws.

The largest species is A. stellatus, which can reach 1.2 m (3.9 ft) in length.
They can be distinguished from other genera of pufferfish through the combination of the presence of a bifurcated fleshy protuberance at each nostril, and a single continuous lateral line on each side of the body without a branch above the anus. While Chelonodon and Tetraodon also have the bifurcated nostril tentacles, their lateral lines branch down towards the anus.
Two species in particular, A. meleagris and A. nigropunctatus, are especially polymorphic. Alongside their typical forms, they also have fully yellow forms, as well as forms intermediate between the two.
There are currently 14 recognized species in this genus:
| Image | Species | Common name |
|---|---|---|
| Arothron caeruleopunctatus
Matsuura, 1994 |
Blue-spotted puffer | |
| Arothron carduus
(Cantor, 1849) |
||
| Arothron diadematus
(Rüppell, 1829) |
Masked puffer | |
| Arothron firmamentum | Starry puffer | |
| Arothron hispidus
(Linnaeus, 1758) |
White-spotted puffer | |
| Arothron immaculatus
(Bloch & J. G. Schneider, 1801) |
Immaculate puffer | |
| Arothron inconditus
J. L. B. Smith, 1958 |
Belly-striped puffer | |
| Arothron manilensis
(Marion de Procé, 1822) |
Narrow-lined puffer | |
| Arothron mappa
(Lesson, 1831) |
Map puffer | |
| Arothron meleagris
(Anonymous, referred to Lacépède, 1798) |
Guineafowl puffer | |
| Arothron multilineatus
Matsuura, 2016 |
Many-lined puffer | |
| Arothron nigropunctatus
(Bloch & J. G. Schneider, 1801) |
Black-spotted puffer | |
| Arothron reticularis
(Bloch & J. G. Schneider, 1801) |
Reticulated puffer | |
| Arothron stellatus
(Anonymous, referred to Lacépède, 1798) |
Stellate puffer |
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