The Dusky reef brotula (Diancistrus fuscus) is a saltwater fish of the family Bythitidae that grows up to 7 cm.
Asia: China, Taiwan/Ch Taipei, Japan, Ryukyu Is., Philippines, Viet Nam
Description
The dusky reef brotula is a livebearing brotula (Bythitidae) from shallow reef and rocky water of the Indo-West Pacific. The species grows to about 8 cm and has a stocky, dark-brown body with long, confluent dorsal and anal fins and small eyes. As a shy, nocturnal fish it hides deep in coral crevices, holes and under stones and snaps at small crustaceans. It gives birth to live young. The fish is harmless to humans.
Frequently asked questions
How do you recognise the Dusky reef brotula?
The Dusky reef brotula has an elongate, eel-like body and is mainly brown.
Where does the Dusky reef brotula live?
The Dusky reef brotula lives in the sea (marine waters) and is mostly found around stony or rocky ground. Asia: China, Taiwan/Ch Taipei, Japan, Ryukyu Is., Philippines, Viet Nam
How big does the Dusky reef brotula get?
The Dusky reef brotula grows to a maximum of about 7 cm.
Is the Dusky reef brotula dangerous to humans?
No, the Dusky reef brotula is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.

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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
More from the family Bythitidae

Want the complete picture on the Dusky reef brotula?
Point your camera at the fish and Fin names the species in seconds. Free, and the Dusky reef brotula is one of 12,519 species in the app.