Marine life  /  Shrimpgobies  /  Black-ray shrimpgoby
Reviewed 2026-09-05
Species entry

Black-ray shrimpgoby

Stonogobiops nematodes

Yellow-headed shrimpgoby with black diagonal bars and a long dorsal filament, sharing a burrow with a snapping shrimp.

Size
To 6 cm
Depth
5–40 m
Habitat
Sand and rubble slopes
Active
Daylight
Range
Indo-Pacific
Rarity
Lembeh Strait
2 stars of 5, usually seen in a week
Black-ray shrimpgoby hovering above its burrow with the first dorsal fin raised into a long black filament, against a green water background.
Simon Buxton

A slender shrimpgoby to about 6 cm, white with three or four black bars set at a steep diagonal and a yellow head. The first dorsal fin is high and its leading spine extends into a long filament, which is the origin of both the high-fin and filament-finned names in circulation. The fish hovers nose-up in the water column above its hole rather than resting on the bottom, a posture which by itself separates it from most other shrimpgobies on the same slope. Stonogobiops yasha is the species most often confused with it and differs in its white snout and orange-red rather than black barring.

Shares a burrow with the snapping shrimp Alpheus randalli, which excavates and continually repairs the tunnel while the goby stands sentry; the shrimp keeps an antenna in contact with the goby’s body and reads its movements. Pairs are usual and a burrow may hold two gobies and two shrimps. Recorded from about 5 m to beyond 40 m on open sand and rubble, and one of the more approachable shrimpgobies once the fish has settled — it will hold position at a metre if the approach is made low and without sudden movement.

Where to find:

LocationRarity Best monthsDepthHabitat
Lembeh Strait Indonesia editorial estimate
2 stars of 5, usually seen in a week
Year-round
5–40 m
Sand and rubble slopes
Anilao Philippines editorial estimate
2 stars of 5, usually seen in a week
Year-round
5–40 m
Sand and rubble slopes

Ratings are per location: 1 means found on most dives that look for it, 5 means a handful of records. Where enough dives have been logged the figure is calculated from them; otherwise it is an editorial estimate, and says so. We publish habitat and destination, not the dive site.

Related species

SP
ambanoro shrimpgoby
16:10
Ambanoro shrimpgoby
Vanderhorstia ambanoro
SP
blue-spotted shrimpgoby
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Blue-spotted shrimpgoby
Cryptocentrus caeruleopunctatus
SP
giant shrimpgoby
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Giant shrimpgoby
Amblyeleotris fontanesii
Magnificent shrimpgoby, Mahidolia mystacina
Magnificent shrimpgoby
Mahidolia mystacina