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🌊 Marine Least Concern 🍽️ Edible 🎣 Game Fish ⚠️ Venomous ⚡ Traumatogenic 🌡️ Subtropical

California flounder

Paralichthys californicus Ayres, 1859
Max Length
152 cm
Max Weight
33.0 kg
Lifespan
30 yrs
Trophic Level
4.5
Depth
0–183 m
Climate
Subtropical
Resilience
Low
Vulnerability
55.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Adults are found mostly on sandy bottoms near shore to 183 m depth. Juveniles are common beyond surf line, larvae settling in bays and estuaries . Adults feed during the day on fishes and squids, often well off the bottom. An important sport and commercial fish. They are caught with trammel nets . Marketed as fresh fillet . Adults migrate to shallower waters to spawn . Has very sharp teeth and is known to bite if handled .

Scientific Name
Paralichthys californicus
Authority
Ayres, 1859
Habitat
Marine
Climate
Subtropical
Body Shape
Short and / or deep
IUCN Status
LC
Max Length
152 cm
Max Weight
33 kg
Lifespan
30 years
Depth Range
0–183 m
Trophic Level
4.5
Resilience
Low
Vulnerability
55.00/100
Migration
Oceanodromous
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

: short and / or deep.

🌀 Behaviour

Behavioural data for California flounder is currently being reviewed.

🦐 Diet

small fish
crustaceans
cephalopods

🥚 Reproduction

📦 Batch Spawner
Size at Maturity
47.3cm TL

Distinct pairing . They are batch spawners that exhibit indeterminate fecundiity and undergo asynchronous ovarian development . Spawning interval is between 7 and 14 days while spawning frequency is around 12 to 13 times per year.

🌍 Habitat & Distribution

Marine; brackish; demersal; oceanodromous ; depth range 0 - 183 m , usually 0 - 60 m . Subtropical; 48°N - 24°N

🌿 Ecology

Zone Preferences
🌊 Marine 🌿 Brackish ⬇️ Benthic
Migration
Oceanodromous
Trophic Level
4.5±0.63

📐 Morphometrics

Length–Weight Relationship: W = 0.00646 × L3.13 (TL)
Max TL
152cm
Max Weight
33,000g

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2007

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
55.00/100
Moderate-High vulnerability
Trophic Level
4.5
Apex / Top predator
Body Shape
Short and / or deep
Climate Zone
Subtropical
Described By
Ayres, 1859

⚠️ Venom Profile

Medical Warning: This species is venomous. Seek immediate medical attention if envenomated. Contact emergency services and follow first aid guidance below.
Venom Type
proteinaceous neurotoxin
Delivery
dorsal, anal, and pelvic fin spines
Potency
Severe
Mortality Risk
Low
Symptom Onset
5min
Duration
24.0hrs
Antivenom
✗ Not Available
Named Toxins
high-molecular-weight protein (Stonustoxin analogue) acetylcholine
Symptoms
  • immediate intense pain
  • swelling
  • erythema
  • occasional nausea and weakness
Affected Body Systems
peripheral nervous system cardiovascular
First Aid
Immerse affected area in hot water (45 C, tolerable) for 30-90 minutes to denature toxin. Do not apply ice.
Medical Treatment

Analgesia; wound care; tetanus prophylaxis; severe cases may require monitoring for systemic effects.

References: Compiled from Bhide (2018), Halstead et al. (1988) and family-specific envenomation literature

🎣 Angling Guide

Difficulty
Beginner
Fight Rating
strong pulls with head-shakes
Best Seasons
spring,summer,fall
Best Time
incoming tide, dawn and dusk
Line Weight
15-30
Rod Type
medium-heavy spinning
Hook Size
2/0-5/0
Catch & Release
✓ Recommended
Best Months
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Techniques
bottom fishing popping cork soft plastics live bait
Bait & Lures
live shrimp cut mullet soft plastic paddle-tails popping corks
Recommended Tackle
  • medium-heavy 7ft spinning rod
  • 30-50 lb braid
  • fluorocarbon leader
Where to Find Them
  • grass flats
  • oyster bars
  • marsh drains
  • deeper channel edges
Tips & Tricks
Popping cork technique attracts fish from distance. Fish moving tides.
Catch & Release Tips

Use barbless hooks, minimise air exposure, and revive fish head-first in current before release.

Regulations Summary

⚠️ Slot limits protect breeding-size fish. Verify daily bag limits.

🍽️ Edibility & Flavour

"California flounder is an edible species."

✓ Suitable Raw
✓ Fresh Indicators
  • Clear, bright eyes — cloudy eyes indicate age
  • Firm flesh that springs back when pressed
  • Fresh ocean smell, never strong or ammonia-like
  • Bright red or pink gills, not grey or brown
  • Shiny, moist skin with scales tightly attached
✗ Avoid If
  • Cloudy or sunken eyes
  • Strong fishy or ammonia odour
  • Soft, mushy flesh that doesn't spring back
  • Discoloured or dry flesh
Best Cooking Methods
Baking Grilling Pan-frying

⚡ Nutrition

Per 100g cooked - Source: USDA FoodData Central

Nutrient Amount
Protein 17.1 g
Omega-3 (total) 207 mg

🔬 Mercury Safety

Mercury data for California flounder has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.

🌿 Sustainability

Best Choice
Healthy stocks, low impact
Good Alternative
Well-managed, minor concerns
Use Caution
Check sourcing and season
Avoid
Overfished or high impact
✓ Sustainable Choice

🔬 Full Nutritional Profile

Per 100g - Raw, per 100g - Source: USDA FoodData Central templates (generic fish average)

Proximate Composition
Energy125 kcal
Moisture75 %
Protein20 %
Total Fat4 %
Ash1.3 %
Fatty Acids (g)
Saturated Fat1 g
Monounsaturated Fat1.2 g
Polyunsaturated Fat1.5 g
Omega-3 Total1 g
EPA0.3 g
DHA0.5 g
Omega-6 Total0.3 g
Key Minerals & Vitamins
Calcium20 mg
Iron0.7 mg
Magnesium30 mg
Phosphorus220 mg
Potassium380 mg
Sodium55 mg
Zinc0.5 mg
Selenium32 µg
Vitamin B122 µg

📊 Population Dynamics

Year Region Index Notes
- - -

🏆 World Records

Record Type Value Angler Location Date Line Class
Weight 8.15 kg Francisco Rivera Del Mar, California 01 Jul 2011 ALL

Source: IGFA All-Tackle World Records database

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Hippoglossus californicus Ayres 1859 Synonym
Pleuronectes maculosus Girard 1854 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 74 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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