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🌊 Marine 🌡️ Subtropical

Pelontrus Kojiorum

Pelontrus kojiorum Koeda, Muto & Wada, 2021
Max Length
5 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
-
Climate
Subtropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Pelontrus Kojiorum (Pelontrus kojiorum), first described by Koeda, Muto & Wada, 2021 is a small fish. Adults typically reach 5.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. It occurs in Subtropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus.

Scientific Name
Pelontrus kojiorum
Authority
Koeda, Muto & Wada, 2021
Habitat
Marine
Climate
Subtropical
Max Length
5 cm
Trophic Level
3.2
Resilience
High
Vulnerability
10.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Pelontrus
Pelontrus
Species
Pelontrus Kojiorum
Pelontrus kojiorum

🐟 Physical Description

This species is distinguished from P. ryukyuensis by the following set of characters: pectoral-fin rays 12-13; scale rows below the lateral line 10; supraneurals 2, small head, its length 42.5% SL, with rounded upper profile; slightly convex in postorbital region; eye small, its diameter 11.9% SL; anterodorsal margin is not protruding above the dorsal head profile; caudal fin is slightly convex; fourth dorsal-fin spine long, its length 20.0% SL; pre-pelvic-fin short, its length 34.8% SL; pectoral fin short, its length 37.0% SL; pelvic-fin spine long, its length 19.6% SL. Colouration: body with an arched orange band from bases of 7th to 9th dorsal-fin spines to middle of caudal-fin base; yellowish-orange spots and blotches on the snout, cheek, jaws, nape, and spinous portion of the dorsal fin .Cross section: compressed.

🌀 Behaviour

Behavioural data for Pelontrus Kojiorum 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; depth range ? - 150 m . Subtropical Northwest Pacific: Japan (Ryukyu Is.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.2±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.02512 × L2.97 (TL)
Max TL
5cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.2
Predator
Climate Zone
Subtropical
Described By
Koeda, Muto & Wada, 2021

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