Pygmy Toby

Canthigaster pygmaea Allen & Randall, 1977

5.6 cm2-30 mPoisonousLeast Concern

831

The Canthigaster pygmaea, commonly known as the pygmy toby, is a small species of pufferfish in the Tetraodontidae family. It is uniquely found in the 🌊 Red Sea, specifically within the 🌊 Western Indian Ocean. The pygmy toby thrives in the vibrant ecosystems of coral reefs, often staying at depths between 2 to 30 meters (approximately 7 to 98 feet). This species is known for its elusive nature, typically hiding in the small crevices, caves, and overhangs of its reef habitat.

Reaching a maximum length of just 5.6 centimeters (2.2 inches), the pygmy toby is considered a diminutive fish. Like many other fish in its family, it is oviparous, meaning it reproduces by laying eggs.

The name Canthigaster comes from Greek roots, with "kanthos" referring to the corner of the eye and "gaster" meaning stomach.

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

Climate change & severe weather

Habitat shifting & alteration · Temperature extremes

Due to its association with coral reefs, C. pygmaea may be experiencing population declines due to habitat loss.

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).

In the Red Sea, which includes 17,640 km2 of coral reef area, 4% of the reefs have been effectively lost (90% mortality), while another 4% are at a critical stage with 50–90% loss of coral cover as of 2008 (Wilkinson et al. 2008).

Threat classification from the IUCN Red List.

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Last Update: June 28, 2026