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💧 Freshwater Least Concern 🐠 Aquarium 🌡️ Tropical

Astyanax Obscurus

Astyanax obscurus Hensel, 1870
Max Length
-
Max Weight
-
Lifespan
-
Trophic Level
2.9
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
21.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Astyanax Obscurus (Astyanax obscurus) is a ray-finned fish of the family Acestrorhamphidae. It inhabits freshwater waters. With a trophic level of 2.9, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List.

Scientific Name
Astyanax obscurus
Authority
Hensel, 1870
Habitat
Freshwater
Climate
Tropical
IUCN Status
LC
Trophic Level
2.9
Resilience
High
Vulnerability
21.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Physical description for Astyanax Obscurus is currently being compiled.

🌀 Behaviour

Behavioural data for Astyanax Obscurus 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. Tropical South America: Laguna dos Patos drainage.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
2.9±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.01047 × L3.11 (TL)

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2018

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
21.00/100
Low vulnerability
Trophic Level
2.9
Omnivore / Planktivore
Climate Zone
Tropical
Described By
Hensel, 1870

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