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💧 Freshwater 🌡️ Tropical

Jenynsia Aurea

Jenynsia aurea Hartmann, Wingert, Angrizani & Malabarba, 2026
Max Length
8 cm
Max Weight
-
Lifespan
-
Trophic Level
2.9
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Jenynsia Aurea (Jenynsia aurea), first described by Hartmann, Wingert, Angrizani & Malabarba, 2026 is a small fish in the family Anablepidae (order Cyprinodontiformes). Adults typically reach 8.00 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.

Scientific Name
Jenynsia aurea
Authority
Hartmann, Wingert, Angrizani & Malabarba, 2026
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
Max Length
8 cm
Trophic Level
2.9
Resilience
High
Vulnerability
10.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Vertebrae: 33 - 34. This species is distinguished from its congeners by the following set of characters: presence of a tubular gonopodium with a short fourth anal-fin ray, less than two-thirds length of ray three; presence of a single midlateral stripe in adults; absence of dorsolateral or ventrolateral chevron marks associated to the midlateral stripe; presence of 13 to 15 gill rakers on ventral limb of first gill arch (in 2 c&s specimens); and presence of the first mandibular-canal pore .: elongated; Cross section: oval.

🌀 Behaviour

Behavioural data for Jenynsia Aurea 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: Brazil.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
2.9±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00525 × L3.15 (TL)
Max TL
8cm
Vertebrae
34

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
2.9
Omnivore / Planktivore
Body Shape
Elongated
Climate Zone
Tropical
Described By
Hartmann, Wingert, Angrizani & Malabarba, 2026

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