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

💧 Freshwater Least Concern 🌡️ Tropical

aquarium

Metynnis argenteus Ahl, 1923
Max Length
14 cm
Max Weight
-
Lifespan
-
Trophic Level
3.4
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
11.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

In weedy side arms of the river; popular aquarium fish in the USA according to Ref. 1672, but might be a misidentification of M. hypsauchen. Needs better reference.

Scientific Name
Metynnis argenteus
Authority
Ahl, 1923
Habitat
Freshwater
Climate
Tropical
IUCN Status
LC
Max Length
14 cm
Trophic Level
3.4
Resilience
High
Vulnerability
11.00/100
Water Temp
24–28 °C
Salinity
0–0.5 ppt

🐟 Physical Description

Physical description for aquarium is currently being compiled.

🌀 Behaviour

Behavioural data for aquarium is currently being reviewed.

🦐 Diet

Diet information for aquarium is currently being compiled.

🥚 Reproduction

Assumed to be like Metynnis hypsauchen.

🌍 Habitat & Distribution

Freshwater; pelagic; pH range: 5.0 - 7.0; dH range: ? - 15. Tropical; 24°C - 28°C South America: Tapajós River basin in Brazil.

🌿 Ecology

Zone Preferences
💧 Freshwater 🐟 Pelagic
Trophic Level
3.4±0.6

📐 Morphometrics

Length–Weight Relationship: W = 0.02754 × L3.11 (TL)
Max TL
14cm

🌡️ Water Parameters & Tolerance

Temperature Range
24–28°C
pH Range
5–7
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
11.00/100
Low vulnerability
Trophic Level
3.4
Predator
Climate Zone
Tropical
Described By
Ahl, 1923

🌐 Names & Taxonomy

Scientific Synonyms

Scientific Name Author Year Status
Metynnis eigenmanni Ahl 1923 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 3 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 aquarium ↗
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Spotted incorrect or outdated data?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.