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💧 Freshwater Least Concern 🌡️ Tropical

Green dwarf tetra

Odontocharacidium aphanes Weitzman & Kanazawa, 1977
Max Length
1.7 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
-
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Green dwarf tetra (Odontocharacidium aphanes), first described by Weitzman & Kanazawa, 1977 is a tiny fish. Adults typically reach 1.70 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Least Concern.

Scientific Name
Odontocharacidium aphanes
Authority
Weitzman & Kanazawa, 1977
Habitat
Freshwater
Climate
Tropical
IUCN Status
LC
Max Length
1.7 cm
Trophic Level
3
Vulnerability
10.00/100
Water Temp
24–28 °C
Salinity
0–0.5 ppt

🔬 Taxonomy

Genus
Odontocharacidium
Odontocharacidium
Species
Green dwarf tetra
Odontocharacidium aphanes

🐟 Physical Description

This species differs from Odontocharacidium varii by the following characters: absence of the antorbital, supraorbital laterosensory canal and of postcleithrum 1 (vs. presence of these 3 characters in O. varii); with bars restricted to the dorsal portion of the body (vs. conspicuous bars extending ventrally to the middle portion of the body); absence of blotches at the tip of the caudal peduncle (vs. presence of two dark round blotches at the tip of caudal peduncle .Cross section: compressed.

🌀 Behaviour

Behavioural data for Green dwarf tetra 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; pH range: 5.8 - 7.0; dH range: ? - 12. Tropical; 24°C - 28°C South America: Amazon River basin.

🌿 Ecology

Zone Preferences
💧 Freshwater 🐟 Pelagic
Trophic Level
3±0.2

📐 Morphometrics

Length–Weight Relationship: W = 0.01122 × L3.04 (TL)
Max TL
1.7cm

🌡️ Water Parameters & Tolerance

Temperature Range
24–28°C
pH Range
5.8–7
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2020

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3
Predator
Climate Zone
Tropical
Described By
Weitzman & Kanazawa, 1977

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