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💧 Freshwater Endangered 🌡️ Tropical

Lipeo livebearer

Jenynsia alternimaculata Fowler, 1940
Max Length
5.5 cm
Max Weight
-
Lifespan
-
Trophic Level
2.9
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
20.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Lipeo livebearer (Jenynsia alternimaculata), first described by Fowler, 1940 is a small fish in the family Anablepidae (order Cyprinodontiformes). Adults typically reach 5.50 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 Endangered.

Scientific Name
Jenynsia alternimaculata
Authority
Fowler, 1940
Habitat
Freshwater
Climate
Tropical
IUCN Status
EN
Max Length
5.5 cm
Trophic Level
2.9
Resilience
High
Vulnerability
20.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal soft rays (total): 7 - 9; Anal soft rays: 9 - 10. With two rows of dorsoventrally elongate markings on the lateral surface of the body. Distinguished from J. lineata by the absence of (1) a swelling between the urogenital opening and the anterior base of the anal fin in females and (2) a mandibular canal Pore W.

🌀 Behaviour

Behavioural data for Lipeo livebearer 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: Western Argentina and southern Bolivia.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
2.9±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00525 × L3.15 (TL)
Max TL
5.5cm
Dorsal Rays
8
Anal Rays
10

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Endangered
Assessment Date
2020

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
20.00/100
Low vulnerability
Trophic Level
2.9
Omnivore / Planktivore
Climate Zone
Tropical
Described By
Fowler, 1940

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