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Crab-eyed Goby

Signigobius biocellatus

  • Fish
  • IUCN: Least concern
  • Usual depth2–18 m
  • Water temperature25–30 °C
  • Best monthsFebruary, October, and November
  • How commonRare
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About this species

The Twin-spot Goby, or Crab-eyed Goby, is a species of goby native to the Western Pacific Ocean where they can be found in areas of sand, silt in lagoons, or coastal bays with nearby cover such as rubble, coral, or leaf litter. They can be found at depths of from 1 to 30 metres. This species can reach a length of 7.5 centimetres (3.0 in) SL. It can also be found in the aquarium trade. It is currently the only known member of its genus.

Text from the Wikipedia article “Twin-spot goby”, licensed CC BY-SA 4.0. Read the article

Where and when

Where it has been recorded

Worldwide

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Best months

Worldwide (open data)

  • January: 2 records
  • February: 11 records
  • March: 2 records
  • April: 6 records
  • May: 5 records
  • June: 2 records
  • July: 7 records
  • August: 2 records
  • September: 5 records
  • October: 9 records
  • November: 9 records
  • December: 5 records

Depth and water temperature

Depth

Mostly recorded at 2–18 m · Deepest record: 22.5 m

  • 0–10 m: 21 records
  • 10–20 m: 9 records
  • 20–30 m: 2 records

Water temperature

Recorded in surface water of 25–30 °C

  • 24–26 °C: 9 records
  • 26–28 °C: 26 records
  • 28–30 °C: 33 records

Names and classification

English
Crab-eyed Goby, Crab-eye Goby, Four-eyed Goby, Signal Goby, Twinspot Goby
Names in 2 more languages
German
Krabbenaugen-Grundel
Japanese
カニハゼ

Similar species

Sources and credits

Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).

  • Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
  • Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
  • Conservation status as published by GBIF (IUCN Red List).
  • 234 open-data records from 1955 to 2023.

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