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🌊 Marine Least Concern 🌡️ Tropical

New guinea viviparous brotula

Diancistrus novaeguineae Machida, 1996
Max Length
10.3 cm
Max Weight
-
Lifespan
-
Trophic Level
3.4
Depth
5–25 m
Climate
Tropical
Resilience
Low
Vulnerability
10.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

New guinea viviparous brotula (Diancistrus novaeguineae) is a ray-finned fish of the family Dinematichthyidae. It inhabits marine (saltwater) waters in reef-associated environments. This species can reach a maximum total length of 10.3 cm. It occurs at depths between 5 and 25 metres. With a trophic level of 3.4, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List.

Scientific Name
Diancistrus novaeguineae
Authority
Machida, 1996
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
10.3 cm
Depth Range
5–25 m
Trophic Level
3.4
Resilience
Low
Vulnerability
10.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal soft rays (total): 74 - 85; Anal soft rays: 60 - 69; Vertebrae: 43 - 45. The species is characterized by the following: vertebrae 11+32-34=43-45, dorsal fin rays 74-85 (mostly >77), anal fin rays 60-69, D/V 6 (rarely 7); large eyes (2.1-3.4% SL); outer pseudoclasper with broad hook-shaped extension, with rounded tip, slightly bent outwards; inner pseudoclasper short, joined to outer pseudoclasper anteriorly, supporter with anteriorly oriented small hook, and with a wide thin flap at posterior-distal margin; scale patch on cheek with 7-9 scale rows on upper cheek, many scales on operculum above opercular spin (7-16 scales in 2-4 rows), in very large specimens additional scale patch below opercular spine (4-12); head profile is moderately slender; otolith length sulcus length 1.9-2.0, sulcus slightly inclined . : elongated; Cross section: compressed.

🌀 Behaviour

Behavioural data for New guinea viviparous brotula 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; reef-associated; depth range 5 - 25 m . Tropical Central Pacific: Great Barrier Reef north of 16°S and in Papua New Guinea south of 5°S; westwards in Maluku, Indonesia; along the Louisiade Archipelago to the Solomon Islands including Santa Cruz Islands and Vanuatu.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.4±0.5
🧍 Solitary

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
10.3cm
Dorsal Rays
80
Anal Rays
65
Vertebrae
44

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2009

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.4
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Machida, 1996

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