Fine Flounder
Fine flounder is a native flatfish found along Chile's Pacific coast from the Atacama north down to the Gulf of Arauco and the Aysén region. It's a legitimate recreational target — bottom-hugging, carnivorous, and large enough to be worth chasing.
Anglers fish it from shore and small boats over sandy and muddy inshore grounds, and it's also commercially harvested, making it one of the few saltwater species with a real dual identity in Chilean waters.
Scientific Name: Paralichthys adspersus
Also known as Lenguado fino, Chilean flounder, lenguado
- Classic flatfish shape — compressed body, both eyes on the left side (occasionally right), with a flat space between them and no ridge.
- Eye side is brown to grey, often with pale and dark blotches; blind side is white and smooth; unpaired fins are marked like the body.
- Large canine teeth at the front of the mouth — a giveaway when you're holding one and trying to unhook it carefully.
- Females reach close to 80 cm; males top out just over 50 cm. A fish over 60 cm is a solid catch by any measure.
What to know
Habitat Distribution
- Native to Chile's Pacific coast; distributed from northern Peru south to the Gulf of Arauco, including the Juan Fernández Archipelago.
- Strictly marine and demersal — lives on or very near the seafloor in depths from the surf zone down to about 35 m.
- Prefers soft-bottom habitat: sand, mud, and gravel on the continental shelf, though it will also hold over mixed rocky-sand areas.
- Juveniles use estuarine and coastal nursery areas; adults move seasonally between inshore and slightly deeper shelf grounds.
Key Locations
- Bay of Coquimbo — well-documented in scientific literature as a productive area for this species along the Norte Chico coast.
- Gulf of Arauco — the southern limit of the species' documented range in Chile, with established recreational and commercial catch records.
- Juan Fernández Archipelago — recorded occurrence confirms the species reaches these offshore Pacific islands.
- Lota and surrounding Biobío coast — specifically noted in Chilean fisheries records as a known occurrence area.
Specific Spots
- Sandy and muddy flats in bays and sheltered coves — fine flounder lie flat and wait, so any soft-bottom depression or trough concentrates them.
- Edges where sand meets rock or reef give them a hard edge to ambush prey moving between habitats.
- Estuarine mouths and shallow bay channels, especially where juvenile baitfish and shrimp funnel through on tidal movement.
- Slightly deeper holes (10–30 m) during warmer months when fish move offshore; shallower surf-zone flats during cooler periods.
Fine Flounder FAQ
Answers from onWater's species guide.
What are the best lures and bait for Fine Flounder?
Soft-plastic paddle-tail lures and grub-style baits in white, chartreuse, or natural baitfish colors, rigged on a jig head and worked slowly along the bottom with short hops, the presentation matches how fine flounder actually feed.
When is the best time to fish for Fine Flounder?
Spring (September–November): fish move into shallower inshore and estuarine areas as water cools from summer; good shore access. Summer (December–February): larger adults may shift to slightly deeper shelf grounds; boat fishing over 10–25 m flats becomes more productive.
How do you catch Fine Flounder?
Most anglers target fine flounder from shore or small boats over sandy and muddy inshore bays, working baits and lures slowly along the bottom. Bottom rigs with natural bait are the most common shore approach; boat anglers cover more ground with soft plastics or small jigs bounced across soft-bottom flats.
What do Fine Flounder eat?
Feeds heavily on small fish, cabinza grunt, horse mackerel, and blenniid fish, making elongated soft-plastic lures and small metal jigs fished slowly along the bottom the most direct imitations.
Where do Fine Flounder live?
Native to Chile's Pacific coast; distributed from northern Peru south to the Gulf of Arauco, including the Juan Fernández Archipelago. Strictly marine and demersal, lives on or very near the seafloor in depths from the surf zone down to about 35 m.
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