Not furry, but we like them anyway.
Tiger Watchman Goby
Valenciennea wardii
Also called Ward's sleeper, Ward's sleeper goby, Ward's tiger, Tiger sleeper goby, Eleotris wardii (original name)
From Indo-Pacific: scattered localities across the Indian Ocean and western tropical Pacific; first described from Zanzibar12
At a glance the quick version
Looks how to spot one
Elongated sand-sifting goby
A slim goby with a pale grey to whitish body crossed by three brown bars. A blue-white stripe runs below the eye, the first dorsal fin carries a dark eyespot, and the brown tail has a thin blue edge.13
Personality what they are like
A peaceful fish toward most tank mates, though it can be territorial with its own kind. It spends its time near the sand bed and its burrow.31
Daily activity how busy a day looks
Busy near the bottom, taking mouthfuls of sand and sifting them for food through the gills.3
Grooming and care the hands-on bits
Needs a deep live sand bed to sift and burrow in. Rockwork should sit on the tank floor rather than on top of the sand, so digging does not shift it. Feed several small meals a day.3
Home where they are happiest
Minimum about 30 US gallons (114 L) with live sand. Saltwater at about 22 to 26 °C, pH 8.1 to 8.4, dKH 8 to 12, specific gravity 1.020 to 1.025. In the wild it lives over sandy and silty bottoms in lagoons, bays and inner reefs, from about 5 m down to 88 m, most often 5 to 20 m.312
Food basics what goes in the bowl
Carnivore. Offer brine shrimp, mysis shrimp, black worms and prepared meaty foods, fed often.3
Company who they like around
Found in pairs in the wild. Best kept alone or as a pair, since it can quarrel with others of its own species.13
The story where it all began
Edward Playfair described it in 1867 as Eleotris wardii, from fish collected near Zanzibar. The species name honours Swinburne Ward, the British Civil Commissioner for the Seychelles. It is now placed in the goby genus Valenciennea.2
Fun facts for the dinner table
- 1
The species is named after Swinburne Ward, a British diplomat who served as Civil Commissioner of the Seychelles.2
- 2
FishBase describes it as extremely rare in the wild, known only from widely scattered spots in the Indian Ocean and western Pacific.1
- 3
It has been recorded from shallow lagoons down to about 88 m deep.1
- 4
In the hobby it also goes by Ward's sleeper and tiger sleeper goby.3
Recognised by the official bits
- IUCN Red List
- Least Concern (assessed 2015)1
The care rhythm a typical week and year
A typical home-care rhythm for a Tiger Watchman Goby. A starting point, not a vet's advice.
- FeedingSmall amounts once or twice a dayevery day
- Temperature checkevery day
- Salinity checkevery week
- Top-upTop up evaporation with fresh RO water, not salt waterevery day
- Water testevery week
- Water changeAbout 10 to 20% of the waterevery 2 weeks
- Glass cleanevery week
Owner questions the things everyone asks
How often should I feed my Tiger Watchman Goby?
Offer small meals once or twice a day, as Furry Diary's starting plan suggests. This carnivore enjoys frequent feedings, so several tiny portions work well. Always follow the food label and your vet's advice for exact amounts.3 Pet Wiki plan
What does a Tiger Watchman Goby eat, and what should it never eat?
It is a carnivore that loves brine shrimp, mysis shrimp, black worms and prepared meaty foods. Avoid any plant-based or non-meaty items, as its diet should be protein-rich. For specific foods to avoid, ask your exotic-pet vet.3
How much space does a Tiger Watchman Goby need?
A minimum of about 30 US gallons (114 litres) with a deep live sand bed is essential. This gives it room to sift sand and build a burrow. Rockwork should sit on the tank floor, not on the sand, to prevent collapses.312
What temperature, light or water does a Tiger Watchman Goby need?
Keep saltwater at 22 to 26 °C, pH 8.1 to 8.4, dKH 8 to 12, and specific gravity 1.020 to 1.025. It needs a deep live sand bed and gentle water flow. Lighting is not critical, but provide a natural day cycle.312
How often should I clean a Tiger Watchman Goby's home?
Furry Diary's plan suggests cleaning the glass weekly, testing water weekly, and changing 10 to 20% of the water every two weeks. Top up evaporation daily with fresh RO water. Regular care keeps the sand bed healthy for sifting. Pet Wiki plan
Can a Tiger Watchman Goby live with others?
Yes, it is peaceful with most tank mates but can be territorial with its own kind. It is best kept alone or as a mated pair. Avoid housing it with other sand-sifting gobies to prevent quarrels.31
How long does a Tiger Watchman Goby live?
Lifespan varies widely and is not specified in the available information. For a reliable estimate, ask your vet or a good breeder who knows this species.
Can I handle a Tiger Watchman Goby?
Handling is not recommended for this delicate fish. It is best observed in its tank, as stress or injury can occur. For any need to move it, consult an experienced aquarist or vet.
Written from the sources on this page, a few checked guides (VCA, ASPCA, RSPCA) and Pet Wiki's own starting care plan. A friendly guide, not a vet's advice.
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Every fact on this page has a numbered source. Spotted an error? support@petwiki.app.
- FishBase: Valenciennea wardii fishbase.seused for distribution, size, depth, habitat, colours, IUCN, pairing
- Wikipedia: Valenciennea wardii en.wikipedia.orgused for history, etymology, size, habitat
- LiveAquaria: Tiger Watchman Goby liveaquaria.comused for care, tank size, water parameters, diet, temperament
Checked 2026-09-30. Text is written in our own words from these sources.