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🌊 Marine Data Deficient 🌡️ Deep-water

Sciadonus Robinsorum

Sciadonus robinsorum Nielsen, 2018
Max Length
4.7 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
4416–4422 m
Climate
Deep-water
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Sciadonus Robinsorum (Sciadonus robinsorum) is a ray-finned fish of the family Bythitidae. It inhabits marine (saltwater) waters in deep-water environments. This species can reach a maximum total length of 4.7 cm. It occurs at depths between 4416 and 4422 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
Sciadonus robinsorum
Authority
Nielsen, 2018
Habitat
Marine
Climate
Deep-water
IUCN Status
DD
Max Length
4.7 cm
Depth Range
4416–4422 m
Trophic Level
3.2
Resilience
High
Vulnerability
10.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal soft rays (total): 81; Anal soft rays: 53; Vertebrae: 77. This species is distinguished by the following characters: horizontal mouth with no tissue flaps anteriorly on protruding lower jaw; no distinct black pigment spots through the transparent skin; D 81, A 53, pectoral 14 and no pelvic fins; precaudal vertebrae 37, total 77; predorsal length 42.5 % SL .Cross section: compressed.

🌀 Behaviour

Behavioural data for Sciadonus Robinsorum 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; bathydemersal; depth range 4416 - 4422 m . Deep-water

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Trophic Level
3.2±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.00468 × L3.03 (TL)
Max TL
4.7cm
Dorsal Rays
81
Anal Rays
53
Vertebrae
77

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Data Deficient
Assessment Date
2018

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.2
Predator
Climate Zone
Deep-water
Described By
Nielsen, 2018

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