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Jolthead porgy

Calamus bajonado Bloch & Schneider, 1801
Max Length
76 cm
Max Weight
10.6 kg
Lifespan
-
Trophic Level
3.5
Depth
3–200 m
Climate
Subtropical
Resilience
Medium
Vulnerability
59.00/100
Typical Length
54 cm
Depth Zone
reef

📖 Overview

Inhabits coastal waters. Found on vegetated sand bottoms and more frequently on coral bottoms. Occasionally found at depths at least 180m and 200 m. . Large adults are usually solitary. Feeds mainly on sea urchins, (including Diadema, Ref. 13442), crabs and mollusks. Excellent food fish .

Scientific Name
Calamus bajonado
Authority
Bloch & Schneider, 1801
Habitat
Marine
Climate
Subtropical
Body Shape
Short and / or deep
IUCN Status
LC
Max Length
76 cm
Max Weight
10.6 kg
Depth Range
3–200 m
Latitude
18°S – 42°N
Trophic Level
3.5
Resilience
Medium
Vulnerability
59.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 12; Dorsal soft rays (total): 12; Anal spines: 3; Anal soft rays: 10. Blue line under each eye. Corner of mouth and isthmus have orange cast . An irregular row of small molariform teeth inside and toward the front of the three usual rows of molars at side of upper jaw; dorsal profile of head evenly convex and not very steep .: short and / or deep.

🌀 Behaviour

Behavioural data for Jolthead porgy is currently being reviewed.

🦐 Diet

Diet information for Jolthead porgy is currently being compiled.

🥚 Reproduction

Size at Maturity
36cm TL

🌍 Habitat & Distribution

Marine; reef-associated; depth range 3 - 200 m . Subtropical; 42°N - 18°S, 98°W - 34°W West Indies (Ref.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.5±0.2
🧍 Solitary
Food Items

sea urchins, (including Diadema, Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.0257 × L2.93 (TL)
Max TL
76cm
Max Weight
10,600g
Dorsal Spines
12
Dorsal Rays
12
Anal Spines
3
Anal Rays
10

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2011

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
59.00/100
High vulnerability
Trophic Level
3.5
Predator
Body Shape
Short and / or deep
Climate Zone
Subtropical
Latitude Range
42°N – 18°S
Described By
Bloch & Schneider, 1801

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