A left-eye flounder in the family Paralichthyidae. Individuals are usually left-eyed, though eye-side reversal can occur.
Southern California field dossier
California Halibut
Paralichthys californicus
- halibut
- California flounder
- barn door
A large-mouthed flatfish usually found with both eyes on the left side, mottled brown upper surface, white blind side, and a lateral line that arches sharply above the pectoral fin.
Sources reviewed 2026-07-288 source records
- Both eyes usually leftMost fish have both eyes on the left side, but a minority are reversed, so use more than eye side alone.
- Large toothed mouthThe jaw extends well back and carries sharp teeth, unlike smaller-mouthed flatfish look-alikes.
- Arched lateral lineThe lateral line makes a distinct high arch above the pectoral fin before running toward the tail.
Verify current regulations before every tripSnapshot checked 2026-07-28. Follow the official links below for live rules, protected areas, licenses, and any in-season changes.
At a glance
Every factual card carries provenance
Sandy and muddy bottom in bays, estuaries, beaches, and coastal shelf habitat, often near edges where bait crosses open bottom.
An ambush predator feeding mainly on fishes, with squid and crustaceans also taken.
California Halibut has species-specific minimum-size, bag, possession, and fillet rules. Measure every fish and verify the live regulation before retention.
Field dossier
Beginner-readable, source-deep
Read multiple features
Identification & look-alikes
Most fish have both eyes on the left side, but a minority are reversed, so use more than eye side alone. The jaw extends well back and carries sharp teeth, unlike smaller-mouthed flatfish look-alikes. The lateral line makes a distinct high arch above the pectoral fin before running toward the tail.
Use body shape, fin placement, color pattern, and the official California identification resources together. Never make a keep decision from one color mark or a count-category name alone.
Scale changes the silhouette
Size & growth
Match the forage class
Diet
How the fish uses the water
Behavior
Start with structure and water column
Habitat & depth
Availability is not a promise
Southern California seasonality
A source-backed starting point
Techniques & tackle
Decide before the fish reaches the rail
Handling & release
Use tackle strong enough to land the fish without an exhausting fight, and keep a dehooker or suitable release tool ready.
If releasing, dehook in the water when possible. Never gaff a fish you plan to release, keep air exposure brief, wet your hands, avoid eyes and gills, and support the body rather than hanging the fish by its mouth.
Face a sluggish fish into the current until it can swim away under its own power.
Snapshot checked 2026-07-28
California regulations
California Halibut has species-specific minimum-size, bag, possession, and fillet rules. Measure every fish and verify the live regulation before retention.
California Halibut has species-specific minimum-size, bag, possession, and fillet rules. Measure every fish and verify the live regulation before retention.
Review the general ocean regulations for possession, filleting, gear, protected-area, and boat-limit rules before departure.
From species to a trip plan
No inferred targeting
Recent verified countsOpen the live count view. Missing source reports remain labeled, never converted to zero.
Live source states →Open tripsBrowse verified schedule inventory. Current beta inventory does not claim that a trip targets this species.
Targeting not yet verified →Landing sourcesInspect official count and schedule sources by Southern California landing.
Source directory →Boats reporting tripsSee boats present in verified schedule feeds. Species targeting is shown only when a source proves it.
Honest coverage →Citation & provenance ledger
8 sources used in this dossier
- California Marine Species PortalCalifornia Department of Fish and WildlifeCurrent California common names, scientific names, and species aliases. Reviewed 2026-07-28.
- California Marine Food and Game FishesCalifornia Department of Fish and WildlifeCDFW Fish Bulletin 157 used for stable Southern California identification, distribution, habitat, and life-history context. Reviewed 2026-07-28.
- Life History Information for Selected California Marine FishesCalifornia Department of Fish and WildlifeOfficial habitat, depth, reproduction, and life-history summaries for California marine fishes. Reviewed 2026-07-28.
- Southern Region ocean regulationsCalifornia Department of Fish and WildlifeOfficial current Southern Region season, size, bag, and possession summary. The page states it was updated July 1, 2026. Reviewed 2026-07-28.
- General ocean fishing regulationsCalifornia Department of Fish and WildlifeOfficial general limits, boat limits, gear rules, and fillet requirements. The page states it was updated July 24, 2026. Reviewed 2026-07-28.
- Marine Fish and Shellfish IdentificationCalifornia Department of Fish and WildlifeOfficial California identification hub, including rockfish groups and Southern California sport-fish references. Reviewed 2026-07-28.
- Catch and release fishing best practicesNOAA FisheriesOfficial handling and release guidance. NOAA states the page was updated September 3, 2025. Reviewed 2026-07-28.
- Ocean Sport Fishing hubCalifornia Department of Fish and WildlifeOfficial entry point for licenses, identification, current regulations, marine protected areas, advisories, and release guidance. Reviewed 2026-07-28.
Continue learning
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