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🌊 Marine 🌡️ Subtropical

Back-fin codlet

Bregmaceros retrodorsalis Ho & Endo, 2020
Max Length
6.4 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
10–455 m
Climate
Subtropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Back-fin codlet (Bregmaceros retrodorsalis) is a ray-finned fish of the family Bregmacerotidae. It inhabits marine (saltwater) waters in pelagic environments. This species can reach a maximum total length of 6.4 cm. It occurs at depths between 10 and 455 metres. With a trophic level of 3.2, it is a low-level carnivore, feeding on invertebrates and small organisms.

Scientific Name
Bregmaceros retrodorsalis
Authority
Ho & Endo, 2020
Habitat
Marine
Climate
Subtropical
Max Length
6.4 cm
Depth Range
10–455 m
Trophic Level
3.2
Vulnerability
10.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal soft rays (total): 52 - 57; Anal soft rays: 58 - 63; Vertebrae: 55 - 58. This species is distinguished by the following characters: orgin of second dorsal-fin well posterior, above bases of 5th to 7th anal-fin rays; snout pointed distinctly longer than eye diameter; upper lobe of the opercle branched distally; body is relatively slender, its depth 10.0-13.0% SL; principal caudal-fin rays 13 (middle 11 branched); D2 52.57; A 58-63; transverse scale rows below orgin of second dorsal-fin 16-18; longitudinal scale rows along body axis 86-93; vertebrae 55-58; the entire body evenly covered with melanophores, those on lateral sides forming regular longitudinal rows, one melanophores per scale; head and isthmus are entirely, but loosely, covered with variably sized melanophores .Cross section: compressed.

🌀 Behaviour

Behavioural data for Back-fin codlet 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; pelagic-neritic; depth range 10 - 455 m . Subtropical

🌿 Ecology

Zone Preferences
🌊 Marine 🐟 Pelagic
Trophic Level
3.2±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00372 × L3.18 (TL)
Max TL
6.4cm
Dorsal Rays
55
Anal Rays
61
Vertebrae
57

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.2
Predator
Climate Zone
Subtropical
Described By
Ho & Endo, 2020

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