New 🐟 Mercury Safety Guide & Omega-3 Rankings Updated for 2026. View Omega-3 Rankings →

🌊 Marine Least Concern 🌡️ Temperate

Grey brotula

Bidenichthys consobrinus Hutton, 1876
Max Length
16 cm
Max Weight
-
Lifespan
-
Trophic Level
3.4
Depth
30–178 m
Climate
Temperate
Resilience
Low
Vulnerability
24.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Grey brotula (Bidenichthys consobrinus), first described by Hutton, 1876 is a medium-sized fish in the family Bythitidae (order Ophidiiformes). Adults typically reach 16.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 30 to 178 metres. It occurs in Temperate waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. The species active primarily at night. On the IUCN Red List, it is classified as Least Concern.

Scientific Name
Bidenichthys consobrinus
Authority
Hutton, 1876
Habitat
Marine
Climate
Temperate
Body Shape
Elongated
IUCN Status
LC
Max Length
16 cm
Depth Range
30–178 m
Trophic Level
3.4
Resilience
Low
Vulnerability
24.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 75; Anal spines: 0; Anal soft rays: 45. Small specimens greyish brown to blackish with a pale yellowish tinge; larger specimens orange or yellow with mottled brown markings.: elongated.

🌀 Behaviour

Behavioural data for Grey 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; demersal; depth range 30 - 178 m . Temperate Southwest Pacific: off northern New Zealand.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.4±0.5
🌙 Nocturnal

📐 Morphometrics

Length–Weight Relationship: W = 0.00468 × L3.03 (TL)
Max TL
16cm
Dorsal Rays
75
Anal Rays
45

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
24.00/100
Low vulnerability
Trophic Level
3.4
Predator
Body Shape
Elongated
Climate Zone
Temperate
Described By
Hutton, 1876

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Dinematichthys consobrinus Hutton 1876 Synonym
Monothrix consobrinus Hutton 1876 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
0 Observations logged on Aquareap

No observations yet - be the first to log one!

View all observations for Grey brotula ↗
Suggest an Edit

Spotted incorrect or outdated data? Submit a correction and our editorial team will review it. Approved edits go live within 48 hours.

Link to a scientific paper, FishBase, or other authoritative source
Report an Issue

Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.