Scientific Name: Istigobius rigilius
English Name: Rigilius goby
Observed in: Pulau Hantu & Sentosa, Singapore
Observed Water Depth: Around 3-15m
Observed Timing: Anytime
If you find around 5cm sized goby, crawling on the bottom of the sea, then
I would say it can be Istigobius rigilius in more than 80% probability. Very common.
当地における超普通種。とりあえずカメラの設定をこいつを撮ってみて調整することが多い。