- English Name : Blackedged pufferfish
- Local Name : Fukkoli
- Size : Max. 30 cm
- Family : TETRAODONTIDAE
- Order : Tetraodontiformes
- Distinctive Characters: Dorsal fin with 9-10 rays. Anal fin with 9-10 rays. Pectoral fin with 15-16 rays. Body round in cross-section. Nasal organs of two tentacles joined at the base. The body except posterior part of tail, base of anal and snout covered with slender spines. Teeth fused into bony plates.
- Colour: Brownish above, lighter below. Upper and lower edge and margin of caudal fin blackish. No markings on body except dark blotch at pectoral fin base.
Habitat and Biology: Generally found in shallow protected waters, to depths of 15 m. A solitary species. Sometimes swims over unsheltered sand and sea grass areas.
- Distribution: Indo-West Pacific.
- Remarks: Arothron immaculatus, like other pufferfishes, is capable of inflating its body into a spiny ball to deterpredators. Theyalsoproducepowerfultoxinsintheirtissues,especiallyintheliverandintheovaries. Eating of these fishes has resulted in serious illness and sometimes death.