Whitespotted Puffer

Arothron hispidus (Linnaeus, 1758)

syn. Arothon hispidus, Arothron hispidus perspicillaris, Crayracion hispidus, Dilobomycter hispidus, Dilobomycterus hispidus, Takifugu hispidus +7 more

50 cm2 Kg1-35 mPoisonousLeast Concern

1196

The Whitespotted Puffer (Arothron hispidus) is a marine fish known for its distinctive appearance and widespread presence in various coastal habitats. It thrives in both saltwater and brackish environments, often associated with reefs, and typically resides at depths ranging from 1 to 50 meters (about 3.3 to 164 feet). The Whitespotted Puffer can grow up to 50 centimeters (approximately 20 inches) in length and can weigh as much as 2 kilograms (around 4.4 pounds).

This species is distinguished by its greenish-brown body covered in numerous white spots, particularly on its back, sides, and caudal fin. Its belly features white bars, and it has a unique bent lateral line. The body is armored with small spines, except around the snout and caudal peduncle, and each nostril sports two fleshy, solid tentacles. Its gill openings are notably restricted. The dorsal and anal fins are composed of 10 to 11 soft rays, and the fish lacks dorsal and anal spines.

The Whitespotted Puffer is benthopelagic, meaning it typically lives near the sea floor but can also be found in the water column. It inhabits a variety of environments from outer reef slopes and lagoon flats to coastal bays and estuaries. Juveniles are frequently seen in weedy estuarine areas. The species prefers areas near rocky reefs or sandy stretches between reefs, often with low algae-rubble or sparse seagrass growth.

Solitary and territorial, the Whitespotted Puffer primarily feeds on a diverse diet including algae, detritus, molluscs, tunicates, sponges, corals, anemones, crabs, tube worms, and echinoderms. This fish is oviparous, meaning it lays eggs, but is known to be poisonous if consumed.

Geographically, the Whitespotted Puffer is found across the Indo-Pacific region, from the 🌊 Red Sea and East Africa to Southern 🇯🇵 Japan and the Hawaiian Islands, extending southward to Lord Howe and Rapa islands. In the Eastern Pacific, its range includes Baja 🇺🇸 California and the Gulf of 🇺🇸 California down to 🇵🇦 Panama.

Why it's threatened

Residential & commercial development

Housing & urban areas · Commercial & industrial areas · Tourism & recreation areas

Pollution

Sewage · Run-off · Type Unknown/Unrecorded · Oil spills · Seepage from mining · Nutrient loads · Soil erosion, sedimentation · Herbicides and pesticides · Garbage & solid waste

Climate change & severe weather

Habitat shifting & alteration · Temperature extremes

There have been no confirmed population declines in A. hispidus. However, because of its affinity with coral reefs, seagrass beds, mangroves and estuaries we infer that A. hispidus may be experiencing population declines due to habitat loss in parts of its range. Additionally, A. hispidus may be experiencing population declines as a result of harvesting for human consumption as part of the pufferfish trade.

As of 2008, fifteen percent of the world’s coral reefs were considered under imminent threat of being “Effectively Lost” (with 90% of the corals lost and unlikely to recover soon), with regions in East Africa, South and South-East Asia, and the wider Caribbean being the most highly threatened (Wilkinson et al. 2008). Of 704 zooxanthellate reef-building coral species which were assessed by using the International Union for Conservation of Nature Red List Criteria, 32.8% are in categories with elevated risk of extinction (Carpenter et al. 2008).

One-third of global seagrass species are currently experiencing population declines, and 21% of globally assessed seagrass species are in threatened or near-threatened categories primarily due to coastal development and pollution (Short et al. 2011).

Globally, 16% of mangrove species are at elevated risk of extinction. Particular areas of geographical concern include the Atlantic and Pacific coasts of Central America, where as many as 40% of mangroves species present are threatened with extinction. (Polidoro et al. 2010). In the Caribbean, approximately 24% of mangrove area has been lost over the past quarter-century (FAO 2007).

Large areas of the China Seas (Liu 2013) and the Gulf of Thailand (Blaber 2000) are considered to be heavily overfished. Additionally, heavy bottom-trawling in the 1980s and the widespread use of modified driftnets for multi-species fisheries in the Bohai Sea, combined with other anthropogenic stresses in this area, have been implicated in the steady decrease in fish landings in this area (Xianshi 2004).

The China Seas have faced severe environmental degradation due to a range of anthropogenic activities within a relatively recent and short time frame (Daoji and Daler 2004), In the lower Yangze River basin it is also likely to be impacted by anthropogenic activities including dam construction and other hydrological alterations, land reclamation, exotic species introductions, eutrophication, rapid sedimentation, deforestation and land erosion (Fu et al. 2003).

Since the 1960s, more than 100,000 ha of Japanese coastal land has been reclaimed for use as new commercial and industrial areas. This has resulted in the denudation of the coastal ecosystem in certain areas.During this period, the ratio of natural seacoast has declined rapidly to 55% for the whole of the Japanese seacoast line, and under 10% in the Tokyo, Osaka and Hiroshima Bay regions (Terawaki et al. 2003)

Threat classification from the IUCN Red List.