The dusky frillgoby (''Bathygobius fuscus''), also known as the brown frillfin,
is a species of
goby
The Gobioidei are a suborder of percomorph fish. Many of these fishes are called gobies. It is by far the largest and most diverse order within the order Gobiiformes, and one of the most diverse groups of ray-finned fish in general.
The subord ...
which is found in the
Indo-Pacific
The Indo-Pacific is a vast biogeographic region of Earth. In a narrow sense, sometimes known as the Indo-West Pacific or Indo-Pacific Asia, it comprises the tropical waters of the Indian Ocean, the western and central Pacific Ocean, and the ...
region from the South Africa north to the
Red Sea
The Red Sea is a sea inlet of the Indian Ocean, lying between Africa and Asia. Its connection to the ocean is in the south, through the Bab-el-Mandeb Strait and the Gulf of Aden. To its north lie the Sinai Peninsula, the Gulf of Aqaba, and th ...
and east as far as Tonga, south to Australia and north to Japan. It is a mainly coastal speciesbut it has an
amphidromous
Fish migration is mass relocation by fish from one area or body of water to another. Many types of fish migrate on a regular basis, on time scales ranging from daily to annually or longer, and over distances ranging from a few metres to thousa ...
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,
as well as feeding on crustaceans, fish and algae
[ and it is a benthic spawner. The maximum ]total length
Fish measurement is the measuring of individual fish and various parts of their anatomies, for data used in many areas of ichthyology, including taxonomy and fishery biology.
Overall length
Standard length (SL) is the length of a fish measured f ...
is .
References
{{Authority control
fuscus
Fish described in 1830