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🌊 Marine Least Concern 🍽️ Edible 🎣 Game Fish 🌡️ Tropical

Blackfin tuna

Thunnus atlanticus Lesson, 1831
Max Length
108 cm
Max Weight
20.6 kg
Lifespan
-
Trophic Level
4.4
Depth
0–50 m
Climate
Tropical
Resilience
Medium
Vulnerability
42.00/100
Typical Length
72 cm
Depth Zone
pelagic

📖 Overview

Found in oceanic waters, sometimes not far from the coast . Forms large mixed schools with the skipjack tuna. Its spawning grounds are located well offshore. Preys on surface and deep-sea fishes, squids, amphipods, shrimps, crabs and stomatopods and decapod larvae. The largest fishery for blackfin tuna operates off the southeastern coast of Cuba and uses live-bait and pole. Utilized fresh, dried or salted, canned and frozen .

Scientific Name
Thunnus atlanticus
Authority
Lesson, 1831
Habitat
Marine
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
108 cm
Max Weight
20.6 kg
Depth Range
0–50 m
Latitude
28°S – 43°N
Trophic Level
4.4
Resilience
Medium
Vulnerability
42.00/100
Migration
Oceanodromous
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 13; Dorsal soft rays (total): 14 - 15; Anal spines: 0; Anal soft rays: 13 - 14; Vertebrae: 39. : fusiform / normal; Cross section: oval.

🌀 Behaviour

Behavioural data for Blackfin tuna is currently being reviewed.

🦐 Diet

small fish
crustaceans
cephalopods

🥚 Reproduction

Size at Maturity
49.4cm TL

🌍 Habitat & Distribution

Marine; pelagic-oceanic; oceanodromous ; depth range 0 - 50 m. Tropical; 20°C - ? ; 43°N - 28°S, 100°W - 26°W south to Trinidad Island and Rio de Janeiro, Brazil (Ref.

🌿 Ecology

Zone Preferences
🌊 Marine 🐟 Pelagic
Migration
Oceanodromous
Trophic Level
4.4±0.3
🐠 Schooling

📐 Morphometrics

Length–Weight Relationship: W = 0.01148 × L3.05 (TL)
Max TL
108cm
Max FL
72cm
Max Weight
20,600g
Dorsal Spines
13
Dorsal Rays
15
Anal Rays
14
Vertebrae
39

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2021

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
42.00/100
Moderate vulnerability
Trophic Level
4.4
Apex / Top predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Latitude Range
43°N – 28°S
Described By
Lesson, 1831

🎣 Angling Guide

Difficulty
Advanced
Fight Rating
blistering runs; among the most powerful fish in the ocean
Best Seasons
summer,fall
Best Time
first light
Line Weight
30-130
Rod Type
heavy trolling
Hook Size
7/0-12/0
Catch & Release
✓ Recommended
Best Months
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Techniques
trolling chunking live bait popping jigging
Bait & Lures
skirted trolling lures ballyhoo live baitfish poppers vertical jigs
Recommended Tackle
  • heavy 30-80 lb class trolling rod
  • conventional reel
  • 80-130 lb wind-on leader
Where to Find Them
  • temperature breaks
  • floating debris
  • current edges
  • offshore seamounts
Tips & Tricks
Watch birds for schooling fish. Use circle hooks for catch-and-release.
Catch & Release Tips

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

Regulations Summary

⚠️ International management (ICCAT, WCPFC). Strict quotas and size limits.

🍽️ Edibility & Flavour

"Blackfin tuna 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 22.9 g
Omega-3 (total) 310 mg

🔬 Mercury Safety

Mercury data for Blackfin tuna 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 (oily fish average)

Proximate Composition
Energy180 kcal
Moisture68 %
Protein22 %
Total Fat8 %
Ash1.4 %
Fatty Acids (g)
Saturated Fat1.8 g
Monounsaturated Fat2.6 g
Polyunsaturated Fat3.2 g
Omega-3 Total2 g
EPA0.6 g
DHA1.1 g
Omega-6 Total0.6 g
Key Minerals & Vitamins
Calcium15 mg
Iron0.9 mg
Magnesium28 mg
Phosphorus235 mg
Potassium380 mg
Sodium55 mg
Zinc0.5 mg
Selenium35 µg
Vitamin D550 IU
Vitamin B3 (Niacin)8 mg
Vitamin B123.2 µg

📊 Population Dynamics

Year Region Index Notes
- - -

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Orcynus balteatus Cuvier 1832 Synonym
Parathunnus ambiguus Mowbray 1935 Synonym
Parathunnus atlanticus Lesson 1831 Synonym
Parathunnus rosengarteni Fowler 1934 Synonym
Scomber coretta Cuvier 1829 Heterotypic
Thunnus balteatus Cuvier 1832 Synonym
Thunnus coretta Cuvier 1829 Heterotypic
Thynnus atlanticus Lesson 1831 Synonym
Thynnus balteatus Cuvier 1832 Synonym
Thynnus coretta Cuvier 1829 Heterotypic

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 16 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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