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💧 Freshwater Near Threatened 🐠 Aquarium 🌡️ Tropical

Moenkhausia Margitae

Moenkhausia margitae Zarske & Géry, 2001
Max Length
6.4 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
13.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Moenkhausia Margitae (Moenkhausia margitae), first described by Zarske & Géry, 2001 is a small fish in the family Acestrorhamphidae (order Characiformes). Adults typically reach 6.40 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 Near Threatened.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Acestrorhamphidae kept in the hobby.

Scientific Name
Moenkhausia margitae
Authority
Zarske & Géry, 2001
Habitat
Freshwater
Climate
Tropical
Body Shape
Short and / or deep
IUCN Status
NT
Max Length
6.4 cm
Trophic Level
3.3
Resilience
High
Vulnerability
13.00/100
Migration
Non-migratory
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 2; Dorsal soft rays (total): 9; Anal spines: 3 - 4; Anal soft rays: 29 - 34; Vertebrae: 34 - 35. Medium-sized species of Moenkhausia distinguished by the following characters: maxilla longer than snout; 1-2 broad, tri-cuspid maxillary teeth; anal fin with 29-34 branched, relatively long rays; small hooks present on rays of anal fin in males; scales relatively large, 34-36 in longitudinal series; 6.5-7.5 vertical scales before dorsal fin origin; first third of caudal origin covered with small, specialized scales; pre-ventral region rounded; shoulder spot rounded and prominent; no black spot on caudal peduncle; no black saddle-spot before origin of dorsal fin; no silver longitudinal band on side of body. 'Spines' refer to unbranched rays.: short and / or deep; Cross section: compressed.

🌀 Behaviour

Behavioural data for Moenkhausia Margitae is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; benthopelagic; non-migratory. Tropical South America: Upper Amazon River basin.

🌿 Ecology

Zone Preferences
💧 Freshwater
Migration
Non-migratory
Trophic Level
3.3±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.01479 × L3 (TL)
Max TL
6.4cm
Dorsal Spines
2
Dorsal Rays
9
Anal Spines
4
Anal Rays
32
Vertebrae
35

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Near Threatened
Assessment Date
2014

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
13.00/100
Low vulnerability
Trophic Level
3.3
Predator
Body Shape
Short and / or deep
Climate Zone
Tropical
Described By
Zarske & Géry, 2001

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