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

💧 Freshwater Critically Endangered 🌡️ Tropical

Pseudepapterus Gracilis

Pseudepapterus gracilis Ferraris & Vari, 2000
Max Length
8.1 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
-
Climate
Tropical
Resilience
-
Vulnerability
13.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Pseudepapterus Gracilis (Pseudepapterus gracilis) is a ray-finned fish of the family Auchenipteridae. It inhabits freshwater waters in benthic environments. This species can reach a maximum total length of 8.1 cm. With a trophic level of 3.3, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Critically Endangered on the IUCN Red List.

Scientific Name
Pseudepapterus gracilis
Authority
Ferraris & Vari, 2000
Habitat
Freshwater
Climate
Tropical
IUCN Status
CR
Max Length
8.1 cm
Trophic Level
3.3
Vulnerability
13.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal soft rays (total): 4; Anal soft rays: 64; Vertebrae: 52.

🌀 Behaviour

Behavioural data for Pseudepapterus Gracilis is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; demersal. Tropical South America: Caura River basin, Venezuela.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Trophic Level
3.3±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00891 × L3.03 (TL)
Max TL
8.1cm
Dorsal Rays
4
Anal Rays
64
Vertebrae
52

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Critically Endangered
Assessment Date
2020

📊 Population Risk & Fisheries

Fishing Vulnerability
13.00/100
Low vulnerability
Trophic Level
3.3
Predator
Climate Zone
Tropical
Described By
Ferraris & Vari, 2000

🗺️ 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 Pseudepapterus Gracilis ↗
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Spotted incorrect or outdated data?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.