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

💧 Freshwater Least Concern 🌡️ Tropical

Potamorrhaphis Petersi

Potamorrhaphis petersi Collette, 1974
Max Length
24.6 cm
Max Weight
-
Lifespan
-
Trophic Level
3.9
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
17.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Potamorrhaphis Petersi (Potamorrhaphis petersi), first described by Collette, 1974 is a medium-sized fish in the family Belonidae (order Beloniformes). Adults typically reach 24.60 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical 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
Potamorrhaphis petersi
Authority
Collette, 1974
Habitat
Freshwater
Climate
Tropical
IUCN Status
LC
Max Length
24.6 cm
Trophic Level
3.9
Resilience
High
Vulnerability
17.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

Kingdom
Animalia
Phylum
Chordata
Class
Teleostei
Teleostei
Order
Beloniformes
Beloniformes
Family
Belonidae
Belonidae
Genus
Potamorrhaphis
Potamorrhaphis
Species
Potamorrhaphis Petersi
Potamorrhaphis petersi

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 37 - 43; Anal spines: 0; Anal soft rays: 32 - 39; Vertebrae: 77 - 85. Most similar to P. guianensis from which it differs most markedly in higher numbers of dorsal and anal fin rays, vertebrae, and predorsal scales. Predorsal scales 109-143, mean 130.5.

🌀 Behaviour

Behavioural data for Potamorrhaphis Petersi is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; pelagic; depth range 0 - ? m. Tropical South America: upper Orinoco and Negro River basins.

🌿 Ecology

Zone Preferences
💧 Freshwater 🐟 Pelagic
Trophic Level
3.9±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.00126 × L3.11 (TL)
Max TL
24.6cm
Dorsal Rays
40
Anal Rays
36
Vertebrae
81

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2020

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
17.00/100
Low vulnerability
Trophic Level
3.9
Predator
Climate Zone
Tropical
Described By
Collette, 1974

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 4 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 Potamorrhaphis Petersi ↗
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.