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🌊 Marine Data Deficient 🌡️ Temperate

Longsnout No-line Scorpionfish

Phenacoscorpius longirostris Motomura & Last, 2009
Max Length
4.8 cm
Max Weight
-
Lifespan
-
Trophic Level
3.4
Depth
-
Climate
Temperate
Resilience
High
Vulnerability
20.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Longsnout No-line Scorpionfish (Phenacoscorpius longirostris) is a ray-finned fish of the family Scorpaenidae. It inhabits marine (saltwater) waters in benthic environments. This species can reach a maximum total length of 4.8 cm. With a trophic level of 3.4, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Data Deficient on the IUCN Red List.

Scientific Name
Phenacoscorpius longirostris
Authority
Motomura & Last, 2009
Habitat
Marine
Climate
Temperate
Body Shape
Short and / or deep
IUCN Status
DD
Max Length
4.8 cm
Trophic Level
3.4
Resilience
High
Vulnerability
20.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 12; Dorsal soft rays (total): 9; Anal spines: 3; Anal soft rays: 5. This species is distinguished by the following combination of characters: pectoral-fin rays 17, all rays unbranched; no palatine teeth; second preopercular spine well-developed, its length longer than third or fourth spines; long snout, its length 12.8-13.1% (mean 12.9%) SL and 27.9-28.6% (mean 28.2%) HL; small eye, orbit diameter 12.3-13.2% (mean 12.8%) SL and 26.9-28.8% (27.8%) HL; narrow head, its width 27.4-28.3% (27.8%) SL; long and shallow caudal peduncle, length and depth 16.9-17.6% (17.3%) SL and 7.1-8.2% (7.7%) SL respectively; long predorsal length 42.2-43.1% (42.7%) SL; long preanal length 74.9-75.0% (74.9%) SL; long prepelvic length 43.1-43.5% (43.3%) SL .: short and / or deep.

🌀 Behaviour

Behavioural data for Longsnout No-line Scorpionfish is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

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

🌍 Habitat & Distribution

Marine; demersal. Temperate; 29°S - 30°S, 159°E - 169°E Southwest Pacific: south of Northfolk Island, Norfolk Island Ridge, Tasman Sea.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.4±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.0166 × L3.07 (TL)
Max TL
4.8cm
Dorsal Spines
12
Dorsal Rays
9
Anal Spines
3
Anal Rays
5

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2015

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
20.00/100
Low vulnerability
Trophic Level
3.4
Predator
Body Shape
Short and / or deep
Climate Zone
Temperate
Described By
Motomura & Last, 2009

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