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🌊 Marine Near Threatened 🍽️ Edible 🎣 Game Fish 🌡️ Subtropical

Southern flounder

Paralichthys lethostigma Jordan & Gilbert, 1884
Max Length
83 cm
Max Weight
9.3 kg
Lifespan
8 yrs
Trophic Level
3.7
Depth
1–43 m
Climate
Subtropical
Resilience
Medium
Vulnerability
44.00/100
Typical Length
50 cm
Depth Zone
demersal

📖 Overview

A cryptic species that tolerates low salinities; occurs frequently in brackish bays and estuaries, even on occasion in fresh water . Minimum depth is at 0.7 meters . Adults are found mostly over mud bottoms in estuaries and coastal waters to about 40 m depth. Taken by anglers inshore from bridges, jetties and small boats. They move to deeper water in winter, but are still easily accessible . Adults feed chiefly on fishes, also on crabs and shrimps. Juveniles take mainly small bottom-living invertebrates. Marketed fresh and frozen; eaten steamed, fried, boiled, microwaved and baked .

Scientific Name
Paralichthys lethostigma
Authority
Jordan & Gilbert, 1884
Habitat
Marine
Climate
Subtropical
Body Shape
Short and / or deep
IUCN Status
NT
Max Length
83 cm
Max Weight
9.3 kg
Lifespan
8 years
Depth Range
1–43 m
Trophic Level
3.7
Resilience
Medium
Vulnerability
44.00/100
Salinity
30–40 ppt

🐟 Physical Description

: short and / or deep.

🌀 Behaviour

Behavioural data for Southern flounder is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External

Distinct pairing .

🌍 Habitat & Distribution

Marine; brackish; demersal; depth range 1 - 43 m . Subtropical; 37°N - 9°N, 98°W - 59°W south to Trinidad and Tobago.

🌿 Ecology

Zone Preferences
🌊 Marine 🌿 Brackish ⬇️ Benthic
Trophic Level
3.7±0.48

📐 Morphometrics

Length–Weight Relationship: W = 0.00575 × L3.19 (TL)
Max TL
83cm
Max Weight
9,300g

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Near Threatened
Assessment Date
2015

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
44.00/100
Moderate vulnerability
Trophic Level
3.7
Predator
Body Shape
Short and / or deep
Climate Zone
Subtropical
Described By
Jordan & Gilbert, 1884

🎣 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

"Southern 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 16.8 g
Omega-3 (total) 177 mg

🔬 Mercury Safety

Mercury data for Southern 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
- - -

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Fluke · Southern Flounder
🇫🇷French Cardeau de Floride
🇪🇸Spanish Leguando limpio · lenguado limpio
🇨🇳Chinese 漠斑牙鮃

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 137 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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