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🌊 Marine Least Concern 🌡️ Tropical

Southern King Weakfish

Macrodon atricauda Günther, 1880
Max Length
46 cm
Max Weight
-
Lifespan
-
Trophic Level
4.1
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
22.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Overview information for Southern King Weakfish is currently being compiled by our editorial team.

Scientific Name
Macrodon atricauda
Authority
Günther, 1880
Habitat
Marine
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
46 cm
Trophic Level
4.1
Resilience
High
Vulnerability
22.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 11; Dorsal soft rays (total): 27 - 29; Anal spines: 2; Anal soft rays: 8 - 10. Macrodon atricauda differs from M. ancylodon by the following characteristics: pored lateral line scales 49-63 (vs. 66-78); anal fin soft rays 9-10, rarely 8 (vs. usually 8, occasionally 9); dorsal fin soft rays 27-28, rarely 29 (vs. 28-29, rarely 27); pectoral fin rays 16-17 (vs. 15-16); largest front canines 2.5 to 3.2 in eye length, proportionally smaller and thinner when compared to M. ancylodon .: fusiform / normal; Cross section: compressed.

🌀 Behaviour

Behavioural data for Southern King Weakfish is currently being reviewed.

🦐 Diet

Diet information for Southern King Weakfish is currently being compiled.

🥚 Reproduction

Reproduction data for Southern King Weakfish is currently being compiled.

🌍 Habitat & Distribution

Marine; demersal. Tropical; 18°S - 37°S, 59°W - 39°W Southwest Atlantic: from Espirito Santo Brazil south to Rio de la Plata, northern Argentina.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
4.1±0.66

📐 Morphometrics

Length–Weight Relationship: W = 0.00631 × L3.09 (TL)
Max TL
46cm
Dorsal Spines
11
Dorsal Rays
28
Anal Spines
2
Anal Rays
9

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
22.00/100
Low vulnerability
Trophic Level
4.1
Apex / Top predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Günther, 1880

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