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🌊 Marine Data Deficient 🌡️ Tropical

Dark coralbrotula

Diancistrus niger Schwarzhans, Møller & Nielsen, 2005
Max Length
4.5 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
2–10 m
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Dark coralbrotula (Diancistrus niger) 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 4.5 cm. It occurs at depths between 2 and 10 metres. With a trophic level of 3.2, 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
Diancistrus niger
Authority
Schwarzhans, Møller & Nielsen, 2005
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
DD
Max Length
4.5 cm
Depth Range
2–10 m
Trophic Level
3.2
Vulnerability
10.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal soft rays (total): 69 - 76; Anal soft rays: 52 - 59; Vertebrae: 41 - 43. This species is characterized by the following: vertebrae 11+30-32=41-43, dorsal fin rays 69-76, anal fin rays 52-59; large eyes (3.0-3.6% SL); outer pseudoclasper large, broad, ear-lobe shaped, opening ventrally; inner pseudoclasper a fleshy appendix at anterior-inner rim of outer pseudoclasper, without supporter; no scales on operculum; head is compressed, blunt; otoliths elongate, ratio otolith length: height 2.3, anterior and posterior tips of otolith almost equally pointed; color dark grey to black when preserved . : elongated; Cross section: compressed.

🌀 Behaviour

Behavioural data for Dark coralbrotula 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 2 - 10 m . Tropical

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.2±0.5
🧍 Solitary

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
4.5cm
Dorsal Rays
73
Anal Rays
56
Vertebrae
42

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2019

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.2
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Schwarzhans, Møller & Nielsen, 2005

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