Bathygobius fuscus

The dusky frillgoby (Bathygobius fuscus), also known as the brown frillfin,^[1] is a species of goby which is found in the Indo-Pacific region from the South Africa north to the Red Sea and east as far as Tonga, south to Australia and north to Japan. It is a mainly coastal speciesbut it has an amphidromous life cycle and it occurs in estuaries and will move into in freshwater streams. In estuarine areas it is found mainly in the creeks preferring environments with sand and rubble, soft coral and open reefs. It feeds on detritus,^[1] as well as feeding on crustaceans, fish and algae^[2] and it is a benthic spawner. The maximum total length is 12 centimetres (4.7 in).^[1]

• Dusky frillgoby swimming in captivity

Bathygobius fuscus
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Gobiiformes
Family:	Gobiidae
Genus:	Bathygobius
Species:	B. fuscus
Binomial name
Bathygobius fuscus (Rüppell, 1830)
Synonyms[2]
Gobius fuscus Rüppell, 1830 Gobius punctillatus Rüppell, 1830 Gobius nebulopunctatus Valenciennes, 1837 Gobius obscurus Peters, 1855 Gobius samberanoensis Bleeker, 1867 Bathygobius samberanoensis (Bleeker, 1867) Gobius vergeri Bleeker, 1867 Bathygobius vergeri (Bleeker, 1867) Stenogobius vergeri (Bleeker, 1867) Gobius darnleyensis Alleyne & Macleay, 1877 Gobius nigripinnis Alleyne & Macleay, 1877 Gobius marginalis De Vis, 1884