Sphoeroides annulatus

Tetraodontidae
Bullseye Puffer, Bullseye Puffer, Gulf Puffer
  • Sphoeroides annulatus, Adult, Galapagos Islands, Ecuador, Photo: Graham Edgar
    Sphoeroides annulatus, Adult, Galapagos Islands, Ecuador, Photo: Graham Edgar
  • Sphoeroides annulatus, Galapagos Islands, Ecuador, Photo: Graham Edgar
    Sphoeroides annulatus, Galapagos Islands, Ecuador, Photo: Graham Edgar
  • Sphoeroides annulatus, Galapagos Islands, Ecuador, Photo: Graham Edgar
    Sphoeroides annulatus, Galapagos Islands, Ecuador, Photo: Graham Edgar
  • Sphoeroides annulatus, Machalilla, Ecuador, Photo: Graham Edgar
    Sphoeroides annulatus, Machalilla, Ecuador, Photo: Graham Edgar
Distribution
Tropical Eastern Pacific
Description
Grey body with a series of often broken and irregular concentric, light circles centred on mid back, and often a scattering of dark spots on sides. Underside pale. When sitting on the bottom it flattens its underside, though often seen swimming in mid-water above the reef and at the surface.
Information
  • Max Size: 44 cm
  • Sea Temperature Range: 16.0-29.3°C
  • Depth: 1-105m
  • Habitat: Coral Reef, Rocky Reef, Soft sediment
  • Habitat Generalisation Index: 1.6
    Also referred to as the SGI (Species generalisation index), this describes the habitat niche breadth of the species. Species with values less than 15 are found in a relatively narrow range of reef habitat types (specialists), while those over 25 may be found on most hard substrates within their range (generalists). Learn more here
Rarity
  • IUCN Threat Status: Least Concern
  • Occurrence: Infrequent (8% of sites)
    Occurrence describes how often the species is found on surveys within its distribution. It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed
  • Abundance: Few (5 per transect)
    Abundance is calculated as the average number of individuals recorded per RLS transect, where present.
Edit by: Joe Shields
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