Marine life  /  Gobies & dartfish  /  Twostripe goby
Reviewed 2026-09-06
Species entry

Twostripe goby

Valenciennea helsdingenii

A large white sleeper goby with two dark stripes running the length of the body.

Size
To about 18 cm
Depth
10–40 m
Habitat
Sand and rubble
Active
Daylight
Range
Indo-Pacific
Rarity
Lembeh Strait
3 stars of 5, a good week should turn one up
SP-01
twostripe goby · full body · habitat
4:3 · min 2400px

The largest of the sleeper gobies met on muck ground, reaching about 18 cm, white to pale cream with two narrow dark brown stripes running from the snout to the tail, one along the upper flank and one lower down. The first dorsal fin is tall and carries a black spot or blotch, and the fin is raised repeatedly while the fish is feeding. The pattern is constant enough that the species is one of the few Valenciennea that does not need a close look.

Animals live in pairs and hold a stretch of sand and rubble between them. Feeding is by sifting: a mouthful of sediment is taken, worked over the gill rakers and expelled through the gill covers as a small plume, and a pair working a patch leaves a trail of these plumes behind it. Both fish maintain a burrow under a slab or a lump of rubble, carrying stones to the entrance in the mouth, and the burrow is where they go when a diver comes too close and where they spend the night.

Recorded from about 10 m down to well past normal diving depth on open sand across the Indo-Pacific. It is more often found deeper than the blueband and orange-dashed gobies, and a pair moving steadily across sand rather than a fish sitting still is the usual first sighting.

Where to find:

LocationRarity Best monthsDepthHabitat
Lembeh Strait Indonesia editorial estimate
3 stars of 5, a good week should turn one up
Year-round
10–40 m
Sand and rubble
Anilao Philippines editorial estimate
3 stars of 5, a good week should turn one up
Year-round
10–40 m
Sand and rubble
Dauin & Dumaguete Philippines editorial estimate
3 stars of 5, a good week should turn one up
Year-round
10–35 m
Volcanic sand and rubble
Bali Indonesia editorial estimate
3 stars of 5, a good week should turn one up
Year-round
12–40 m
Sand slopes
Papua New Guinea Papua New Guinea editorial estimate
3 stars of 5, a good week should turn one up
Year-round
10–40 m
Sand at the base of reef

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
blackfin dartfish
16:10
Blackfin dartfish
Ptereleotris evides
SP
blueband goby
16:10
Blueband goby
Valenciennea strigata
Common ghost goby, Pleurosicya mossambica
Common ghost goby
Pleurosicya mossambica
Crab-eye goby, Signigobius biocellatus
Crab-eye goby
Signigobius biocellatus