🌊 Marine
Least Concern
🌡️ Deep-water
Bigeye searsid
Holtbyrnia macrops Maul, 1957
📖 Overview
Bathypelagic to benthopelagic in the northern parts of range, occurring from 300-1,000 m in the daytime, but as shallow as 100-120 m at night .
Scientific Name
Holtbyrnia macrops
Authority
Maul, 1957
Habitat
Marine
Climate
Deep-water
IUCN Status
LC
Max Length
20 cm
Depth Range
100–1000 m
Latitude
35°S – 70°N
Trophic Level
3.4
Resilience
High
Vulnerability
14.00/100
Salinity
30–40 ppt
🔬 Taxonomy
Kingdom
Animalia
Phylum
Chordata
Class
Teleostei
Teleostei
Order
Alepocephaliformes
Alepocephaliformes
Family
Platytroctidae
Platytroctidae
Genus
Holtbyrnia
Holtbyrnia
Species
Bigeye searsid
Holtbyrnia macrops
🐟 Physical Description
Physical description for Bigeye searsid is currently being compiled.
🌀 Behaviour
Behavioural data for Bigeye searsid 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 100 - 1000 m . Deep-water; 70°N - 35°S, 34°W - 20°E South Africa.
🌿 Ecology
Zone Preferences
🌊 Marine
🌑 Deep Water
Trophic Level
3.4±0.5
📐 Morphometrics
Length–Weight Relationship:
W = 0.00407 × L3.17
(TL)
Max TL
20cm
🌡️ Water Parameters & Tolerance
Salinity Range
30–40ppt
🛡️ Conservation Assessment
IUCN Category
Least Concern
Assessment Date
2014
📊 Population Risk & Fisheries
Population Resilience
High
Minimum doubling time
Fishing Vulnerability
14.00/100
Low vulnerability
Trophic Level
3.4
Predator
Climate Zone
Deep-water
Latitude Range
70°N
–
35°S
Described By
Maul, 1957
🔍 Similar Species
✕
‹
![]()
›
👥 Community & Contribute
Aquareap Community Observations
No observations yet - be the first to log one!
View all observations for Bigeye searsid ↗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Spotted incorrect or outdated data?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.
Report an Issue
Found a factual error, broken data, or inappropriate content? Let us know and we will investigate promptly.