Pseudaphya ferreri
A tiny, rarely logged goby found off the French Riviera in cool 16 to 19 C water, sitting still on sand and rubble.
A small goby, only around 3 cm long, with a slender translucent body and light brown to sandy mottling that makes it blend into the seabed. It has the typical goby shape: two dorsal fins, a blunt head, and large eyes set high on the head. Because it is so small and pale, divers usually spot it by movement or by scanning sand and rubble patches closely rather than by any bold marking.
Divers who find Ferrer's Goby usually see it resting low on sand or rubble rather than swimming in open water, holding still for long stretches before a short dart to a new spot. It shows little reaction to divers at typical observation distances, likely because at 3 cm it relies on staying still and blending in rather than fleeing. Most logged sightings describe it as rare to uncommon even at sites where it is known to occur, so finding one usually takes a slow, close look at the substrate.
Its entire known diver record sits within a small stretch of French coastline, making it one of the more geographically narrow gobies logged by divers rather than one spread across the wider Mediterranean.
Sightings show no clear seasonal pattern, so treat this as a year-round possibility rather than a seasonal target. Observed water temperatures range from 16.1 to 19.4 C, cooler conditions typical of the Mediterranean outside peak summer, which fits with sightings spread across the colder months as much as the warmer ones.
Every logged sighting of Ferrer's Goby so far comes from France, concentrated in the French Riviera and Provence region. It has not turned up in diver records outside this stretch of the Mediterranean coast, so it is currently a France-only species for underwater spotters.
Mapping where Ferrer's Goby is logged…
All confirmed diver sightings of Ferrer's Goby are from the French Riviera and Provence region in southern France. It has not been logged elsewhere, so this stretch of coast is currently the place to look.
There is no strong seasonal pattern in the sighting data, so it appears to be a year-round find rather than tied to a particular season. Observed water temperatures range from 16.1 to 19.4 C, covering much of the Mediterranean dive season.
Look for a tiny, translucent brown to sandy-coloured goby around 3 cm long resting on sand or rubble. It lacks bold markings, so patient close-up scanning of the seabed is usually needed to pick one out.
Ferrer's Goby is a small species, typically reaching only around 3 cm in length, making it one of the smaller gobies divers might encounter in the Mediterranean.
No, Ferrer's Goby poses no danger to divers. It is a tiny, non-aggressive fish that simply rests on the seabed and is best observed without disturbing it.
Site and sighting data is aggregated from diver logs, iNaturalist and GBIF. For taxonomy and conservation status:
Slender Goby
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