Eviota guttata
A tiny, easily overlooked goby that turns up reliably on Oman's Daymaniyat Islands reefs year-round in warm 25-29C water.
At barely 2cm long, spotting one at all is the real challenge, this is a translucent to reddish-brown sliver of a fish with a scattering of pale to dark spots along its body and head. It has the classic goby shape: an elongated body, big eyes for its size, and a habit of resting propped on its pelvic fins rather than swimming freely. You'll need to get close and look at rubble, coral heads, or reef ledges rather than open water.
Look for it perched motionless on rubble, dead coral, or ledges rather than out swimming in the water column, typical goby behaviour for holding a tiny territory. It tends to sit tight and let divers approach rather than bolting, though its small size and camouflage mean most divers swim straight past without ever clocking it. Best found by slowing right down and scanning close-up on rubble patches rather than looking at the reef as a whole.
Like other Eviota gobies, it likely has a short lifespan of only a few months, packing its whole life cycle into a fast-growing, fast-breeding turnaround, which helps explain why these tiny gobies are so numerous on the reef despite being so easy to miss.
No clear seasonal pattern shows up in the data, and with a comfortable range of roughly 25 to 29C it likely sits on these reefs year-round rather than showing up for just a few months. Plan around when you're diving Oman generally rather than chasing a specific window.
Reef neighbours a diver could mistake it for. Use the identification notes above to tell them apart.
This one is overwhelmingly an Oman fish among logged sightings, with the Daymaniyat Islands and Muscat both standing out as strongholds. It also turns up in Egypt's Marsa Alam and the Deep South, though far less often, so Oman is the country to prioritise if you're hunting for it specifically.
Mapping where Spotted Pygmy Goby is logged…
Oman is by far the most reliable country, especially the Daymaniyat Islands and Muscat region. It's also been logged in Egypt around Marsa Alam and the Deep South, though less frequently.
There's no detected season in the sighting data, and its comfortable temperature range of roughly 25 to 29C suggests it's present on reefs year-round rather than tied to a particular month.
Look for a tiny, roughly 2cm translucent to reddish fish with pale spots, resting propped on rubble or coral rather than swimming in open water. Its small size means you need to slow down and scan close-up to spot it at all.
Around 2cm, making it one of the smaller reef gobies divers might try to spot, and easy to overlook without a close, slow look at rubble and coral surfaces.
No, most sites where it's logged rate it as only uncommon, with a handful of sites in Oman reporting it as common. Finding one usually takes deliberate, slow searching rather than a casual reef scan.
Site and sighting data is aggregated from diver logs, iNaturalist and GBIF. For taxonomy and conservation status:
Slender Goby
803 sites
