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🌊 Marine Data Deficient 🌡️ Tropical

Christmas viviparous brotula

Paradiancistrus christmasensis Schwarzhans & Møller, 2011
Max Length
6.8 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
15–22 m
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Christmas viviparous brotula (Paradiancistrus christmasensis), first described by Schwarzhans & Møller, 2011 is a small fish. Adults typically reach 6.80 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 15 to 22 metres. It occurs in Tropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. The species largely solitary in behaviour. On the IUCN Red List, it is classified as Data Deficient.

Scientific Name
Paradiancistrus christmasensis
Authority
Schwarzhans & Møller, 2011
Habitat
Marine
Climate
Tropical
Body Shape
Elongated
IUCN Status
DD
Max Length
6.8 cm
Depth Range
15–22 m
Trophic Level
3.3
Vulnerability
10.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Paradiancistrus
Paradiancistrus
Species
Christmas viviparous brotula
Paradiancistrus christmasensis

🐟 Physical Description

Dorsal soft rays (total): 78; Anal soft rays: 67; Vertebrae: 43. This species is distinguished by the following characters: vertebrae 11+32=43; dorsal fin rays 78; anal fin rays 67; head with narrow scale patch on cheeks with 3 rows on upper cheek and 2 rows on lower cheek; operculum scaleless; stubby snout profile; lower preopercular pore 1; otolith with undifferentiated, short sulcus, dorsal rim anteriorly expanded, posteriorly depressed, otolith length to otolith height 2.15, otolith length to sulcus length 2.3 .: elongated.

🌀 Behaviour

Behavioural data for Christmas 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; benthopelagic; depth range 15 - 22 m . Tropical Indian Ocean, Christmas Island.

🌿 Ecology

Zone Preferences
🌊 Marine
Trophic Level
3.3±0.5
🧍 Solitary

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
6.8cm
Dorsal Rays
78
Anal Rays
67
Vertebrae
43

🌡️ 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
3.3
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Schwarzhans & Møller, 2011

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