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

🌊 Marine Least Concern 🌡️ Deep-water

Penopus Microphthalmus

Penopus microphthalmus Vaillant, 1888
Max Length
35 cm
Max Weight
-
Lifespan
-
Trophic Level
3.6
Depth
960–3535 m
Climate
Deep-water
Resilience
Medium
Vulnerability
29.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Penopus Microphthalmus (Penopus microphthalmus) is a ray-finned fish of the family Ophidiidae. It inhabits marine (saltwater) waters in deep-water environments. This species can reach a maximum total length of 35 cm. It occurs at depths between 960 and 3535 metres. With a trophic level of 3.6, it is a mid-level predator. It is assessed as Least Concern on the IUCN Red List.

Scientific Name
Penopus microphthalmus
Authority
Vaillant, 1888
Habitat
Marine
Climate
Deep-water
IUCN Status
LC
Max Length
35 cm
Depth Range
960–3535 m
Trophic Level
3.6
Resilience
Medium
Vulnerability
29.00/100
Salinity
30–40 ppt

🔬 Taxonomy

Kingdom
Animalia
Phylum
Chordata
Class
Teleostei
Teleostei
Order
Ophidiiformes
Ophidiiformes
Family
Ophidiidae
Ophidiidae
Genus
Penopus
Penopus
Species
Penopus Microphthalmus
Penopus microphthalmus

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 135 - 158; Anal spines: 0; Anal soft rays: 106 - 122; Vertebrae: 77 - 83. Penopus microphthalmus differs from P. japonicus by the following characters: has a higher number of dorsal, 135-158 (vs. 117) and anal, 106-122 (vs. 89) fin rays; lower number of preopercular spines, 4-7 (vs. 9); indistinct spine behind the posterior nostril (vs. distinct, 1% SL); by the bigger horizontal diameter of the eye 1.1-1.6% SL (vs. 0.8); and in having an almost fully scaled head (vs. squamation of the head restricted to the middle part of the preopercle) .

🌀 Behaviour

Behavioural data for Penopus Microphthalmus 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 960 - 3535 m . Deep-water East Atlantic: from 34°28'N, 7°43'W southwards through the Gulf of Guinea to 36°06'S, 19°33'E.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Trophic Level
3.6±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.0011 × L3.08 (TL)
Max TL
35cm
Dorsal Rays
147
Anal Rays
114
Vertebrae
80

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2014

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
29.00/100
Low vulnerability
Trophic Level
3.6
Predator
Climate Zone
Deep-water
Described By
Vaillant, 1888

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Dicromita microphthalma Vaillant 1888 Synonym
Penopus macdonaldi Goode & Bean 1896 Synonym
Penopus microcephalus Vaillant 1888 Synonym
Sirembo microphthalmus Vaillant 1888 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 Penopus Microphthalmus ↗
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.