Buglossidium luteum
A pocket-sized flatfish rarely logged off Occitanie's sandy seabeds, comfortable from 8 to 19C year-round.
A small, oval flatfish rarely longer than 14cm, lying flat on sand with both eyes on its right side, facing upward. Skin is mottled yellowish-brown with darker blotches that break up its outline against the seabed, and the dorsal and pectoral fins often show fine dark banding. It stays almost motionless unless disturbed, which is usually the biggest clue to spotting one at all.
Spends most of its time half buried or pressed flat against sand and fine sediment, relying on camouflage rather than flight. Divers who do spot one usually find it motionless during daylight passes over open sandy patches, only flicking away in a short burst if directly disturbed. It is consistently logged as rare to uncommon, so most divers who see it are actively scanning sand rather than stumbling on it mid-swim.
As a true flatfish, it starts life swimming upright with an eye on each side, then twists one eye across its skull as it settles onto the seabed, a transformation that defines the whole sole and flounder group.
Sightings show no clear seasonal pattern, and the species tolerates a wide range from 8.1 to 18.8C, so it can turn up on sandy seabeds in Occitanie and Provence at any time of year.
Nearly every logged sighting comes from France, with Occitanie standing out as the strongest area and the French Riviera and Provence offering a smaller but real chance. Outside these regions there is little to no diver data to draw on.
Mapping where Solenette is logged…
France is the only country with meaningful diver records, and Occitanie is by far the most reliable region, with a smaller number of sightings around the French Riviera and Provence.
There is no detected seasonal pattern, so sightings are treated as year-round. It tolerates water from about 8 to 19C, which covers most of the diving season in Occitanie.
Look for a small, flat, oval fish lying still on sand, mottled brown with darker blotches and both eyes on its upward-facing side. It rarely exceeds 14cm and relies on camouflage rather than movement to avoid notice.
Solenette typically reach around 14cm in length, making them one of the smaller flatfish divers might encounter on sandy seabeds.
Its mottled colouring closely matches sandy seabeds and it stays almost completely still, so it is usually overlooked unless a diver is deliberately scanning the sand at close range. Sighting logs mark it as rare at most sites where it has been recorded.
Site and sighting data is aggregated from diver logs, iNaturalist and GBIF. For taxonomy and conservation status:
Rainbow Runners
1,438 sites
