Fusigobius signipinnis

Flasher Sandgoby | Fine-spotted Sandgoby | Signal Goby | Signalfin Goby | Coryphopterus signipinnis
Fusigobius signipinnis
Fusigobius signipinnis, Photo: Rick Stuart-Smith
Fusigobius signipinnis
Fusigobius signipinnis, Ashmore Reef, WA, Australia, Photo: Graham Edgar
Fusigobius signipinnis
Fusigobius signipinnis, Northern Great Barrier Reef, QLD, Photo: Andrew Green
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Fusigobius signipinnis
Fusigobius signipinnis
Fusigobius signipinnis


Tropical Indo-Pacific


Pale, translucent body covered in brown and white spots, large dark reddish flag-like patch on first dorsal fin, which it flicks up and down ('flashing'), and reddish eyes. Thin internal stripes of white and dark red dashes. Similar F. melacron (Blacktip Sandgoby) lacks red on fin and eyes. Found on sand patches near reefs.


Max Size: 5 cm

Sea Temperature Range: 23.5-31.2°C

Depth: 3-30m

Habitat Generalization Index: 3.62

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.

Conservation and Rarity

IUCN Status: Not Evaluated

Occurrence: Frequent (17.2% 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 (3 per transect)

Abundance is calculated as the average number of individuals recorded per RLS transect, where present.

Edit by: Joe Shields