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🌊 Marine Least Concern 🍽️ Edible 🎣 Game Fish 🌡️ Subtropical

Sand weakfish

Cynoscion arenarius Ginsburg, 1930
Max Length
63.5 cm
Max Weight
2.8 kg
Lifespan
5 yrs
Trophic Level
4.2
Depth
-
Climate
Subtropical
Resilience
Medium
Vulnerability
36.00/100
Typical Length
35 cm
Depth Zone
demersal

📖 Overview

Occurs usually over sandy bottoms in shallow coastal waters, being relatively abundant in the surf zone. During summer months the fish move to their nursery and feeding grounds in river estuaries.

Scientific Name
Cynoscion arenarius
Authority
Ginsburg, 1930
Habitat
Marine
Climate
Subtropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
63.5 cm
Max Weight
2.8 kg
Lifespan
5 years
Trophic Level
4.2
Resilience
Medium
Vulnerability
36.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 9 - 11; Dorsal soft rays (total): 25 - 29; Anal spines: 2; Anal soft rays: 10 - 12. Colour uniform silvery grey above, without conspicuous spots, silvery below. Pelvic and anal fins pale to yellowish. A faint dark area at bases and axial of pectoral fins. Inside opercle darkish, often visible externally. Mouth large, oblique, lower jaw slightly projecting. Upper jaw with a pair of large canine-like teeth at tip. Lower jaw with a row of widely spaced larger inner-row teeth, gradually increasing in size posteriorly. Chin without barbel or pore, snout with 2 marginal pores. Gas bladder with a pair of horn-like anterior appendages. Soft portion of dorsal fin with few small scales rows at base between soft fin rays (Ref 51721).: fusiform / normal.

🌀 Behaviour

Behavioural data for Sand weakfish is currently being reviewed.

🦐 Diet

Diet information for Sand weakfish is currently being compiled.

🥚 Reproduction

Size at Maturity
14cm TL

🌍 Habitat & Distribution

Marine; brackish; demersal. Subtropical; 30°N - 18°N, 98°W - 80°W

🌿 Ecology

Zone Preferences
🌊 Marine 🌿 Brackish ⬇️ Benthic
Trophic Level
4.2±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00955 × L3.03 (TL)
Max TL
63.5cm
Max Weight
2,800g
Dorsal Spines
10
Dorsal Rays
27
Anal Spines
2
Anal Rays
11

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2020

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
36.00/100
Moderate vulnerability
Trophic Level
4.2
Apex / Top predator
Body Shape
Fusiform / normal
Climate Zone
Subtropical
Described By
Ginsburg, 1930

🍽️ Edibility & Flavour

"Sand weakfish is an edible species."

✗ Not for 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 19.1 g
Omega-3 (total) 372 mg

🔬 Mercury Safety

Mercury data for Sand weakfish 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

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Sand Trout · Sand Weakfish · Seatrout · White Seatrout · White Trout · White Weakfish · sand seatrout
🌍CES smuha písečná
🇩🇰Danish Sandskørfisk
🇩🇪German Adlerfisch
🇫🇷French Acoupa de Sable
🇵🇹Portuguese Corvina-sorrateira · Corvinata
🇷🇺Russian Песчаный судачий горбыль
🇪🇸Spanish Corvina blanca · Corvinata de Arena · Curvina · Trucha de Arena · corvina arenera
🇨🇳Chinese 沙犬牙石首魚

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 150 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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