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💧 Freshwater Least Concern 🐠 Aquarium 🌡️ Tropical

Usumacinta molly

Poecilia kykesis Poeser, 2002
Max Length
13 cm
Max Weight
-
Lifespan
-
Trophic Level
2.3
Depth
-
Climate
Tropical
Resilience
Medium
Vulnerability
40.00/100
Typical Length
-
Depth Zone
-

📖 Overview

This species is like other species in the Poecilia latipinna complex, which occurs in shallow, brackish to freshwater coastal areas such as tidal lagoons, lakes, creeks, and pools. It is also found across a range of turbidity (clear to muddy) and substrate types (mud, sand, clay) and is sometimes associated with submerged or emergent aquatic vegetation .

Scientific Name
Poecilia kykesis
Authority
Poeser, 2002
Habitat
Freshwater
Climate
Tropical
IUCN Status
LC
Max Length
13 cm
Trophic Level
2.3
Resilience
Medium
Vulnerability
40.00/100

🐟 Physical Description

Dorsal soft rays (total): 12 - 16; Anal soft rays: 9. This species is distinguished by the following characters: D 12-16; A 9; lateral line scales 28-29; circumpendancular scales 20; no specific body pigmentation, except for the black margined scale; in adult males, the black margins can form spots, extending the rows of spots found on the caudal fin; caudal fin with a slightly produced lower margin .Cross section: compressed.

🌀 Behaviour

Behavioural data for Usumacinta molly is currently being reviewed.

🦐 Diet

algae
aquatic plants
detritus

🥚 Reproduction

🐣 Viviparous 🤰 Viviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
Internal

🌍 Habitat & Distribution

Freshwater; brackish; benthopelagic. Tropical North Central America: Guatemala (from the tributary of Rio Usumacinta and nearby lakes, Péten) to Mexico (Yucatan Peninsula).

🌿 Ecology

Zone Preferences
💧 Freshwater 🌿 Brackish
Trophic Level
2.3±0.2

📐 Morphometrics

Length–Weight Relationship: W = 0.01318 × L3.15 (TL)
Max TL
13cm
Dorsal Rays
14
Anal Rays
9

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2018

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
40.00/100
Moderate vulnerability
Trophic Level
2.3
Omnivore / Planktivore
Climate Zone
Tropical
Described By
Poeser, 2002

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