Fin's Fish Guide
The Cobalt goby (Lythrypnus cobalus) is a saltwater fish of the family Gobiidae that grows up to 3 cm.
Description
The cobalt goby is a very small goby (Gobiidae) from shallow reef water of the eastern Pacific, in the Gulf of California. The species grows to about 3 cm and has a slender body with striking bright-blue crossbars on a dark ground and fused pelvic fins forming a sucker. As a shy bottom-dweller it shelters among rocks, coral and sea urchins and snaps at tiny crustaceans. The fish is harmless to humans.
Frequently asked questions
How do you recognise the Cobalt goby?
The Cobalt goby has an elongate, eel-like body, is mainly blue and shows a vertical stripes pattern.
Where does the Cobalt goby live?
The Cobalt goby lives in the sea (marine waters) and is mostly found around stony or rocky ground. South America: Cocos I. (C.R.)
How big does the Cobalt goby get?
The Cobalt goby grows to a maximum of about 3 cm.
Is the Cobalt goby dangerous to humans?
No, the Cobalt goby 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.
More photos
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Lythrypnus
More from the family Gobiidae
Want the complete picture on the Cobalt goby?
Point your camera at the fish and Fin names the species in seconds. Free, and the Cobalt goby is one of 12,519 species in the app.
Or scan with your phone