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

🌊 Marine Least Concern 🌡️ Deep-water

Pseudonus Acutus

Pseudonus acutus Garman, 1899
Max Length
12.1 cm
Max Weight
-
Lifespan
-
Trophic Level
3.4
Depth
915–1620 m
Climate
Deep-water
Resilience
High
Vulnerability
24.00/100
Typical Length
-
Depth Zone
deep-water

📖 Overview

Pseudonus Acutus (Pseudonus acutus), first described by Garman, 1899 is a small fish in the family Bythitidae (order Ophidiiformes). Adults typically reach 12.10 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 915 to 1620 metres. It occurs in Deep-water waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. On the IUCN Red List, it is classified as Least Concern.

Scientific Name
Pseudonus acutus
Authority
Garman, 1899
Habitat
Marine
Climate
Deep-water
Body Shape
Elongated
IUCN Status
LC
Max Length
12.1 cm
Depth Range
915–1620 m
Trophic Level
3.4
Resilience
High
Vulnerability
24.00/100
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal soft rays (total): 101 - 119; Anal soft rays: 74 - 85; Vertebrae: 61 - 63. This species is distinguished by the following characters: D 101-119; A 74-85; vertebrae 61-63; pelvic fin absent .: elongated.

🌀 Behaviour

Behavioural data for Pseudonus Acutus 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 915 - 1620 m . Deep-water Central Pacific: Gulf of Panama, off Ecuador and northern Peru, Galapagos Is.

🌿 Ecology

Zone Preferences
🌊 Marine 🌑 Deep Water
Trophic Level
3.4±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.00468 × L3.03 (TL)
Max TL
12.1cm
Dorsal Rays
110
Anal Rays
80
Vertebrae
62

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
24.00/100
Low vulnerability
Trophic Level
3.4
Predator
Body Shape
Elongated
Climate Zone
Deep-water
Described By
Garman, 1899

🌐 Names & Taxonomy

Language Common Names
🌍CES jeskyňovka ostrá
🇷🇺Russian Острый псевдонус

🗺️ 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 Pseudonus Acutus ↗
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.