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💧 Freshwater 🌡️ Tropical

Lacustricola Gemma

Lacustricola gemma Nagy, 2025
Max Length
2.3 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
-
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
-

📖 Overview

This species inhabits a turbid remnant pool in the seasonal Lubule River, 1-2 m wide, with margins overgrown by grass .

Scientific Name
Lacustricola gemma
Authority
Nagy, 2025
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
Max Length
2.3 cm
Trophic Level
3
Vulnerability
10.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal soft rays (total): 9; Anal soft rays: 13 - 14. This species is distinguished from its congeners by the following set of characters: a pattern of iridescent, diamond-shaped, light blue spots in scale centres, especially evident below mid-longitudinal series on posteroventral portion of flank, and larger iridescent blue blotches on dorsum, creating an irregular reflective pattern on body of the males; median fins yellow to hyaline, dorsal and anal fins with six to eight dark grey stripes perpendicular to fin rays basally and posteriorly, with light blue iridescence basally; dorsal with light blue distinct margin; anal with dark grey margin; caudal fin with four to five dark grey stripes perpendicular to fin rays; dorsal and anal fins hyaline with irregular brown stripes, fin tips with narrow light blue margin, caudal hyaline without markings in females; and in males: body depth at pelvic-fin origin 25.6-27.4, anal-fin base length 18.7-19.6, head depth 79-83, head width in % of its depth 83-87, caudal peduncle length in % of its depth 111-114 .: elongated; Cross section: oval.

🌀 Behaviour

Behavioural data for Lacustricola Gemma is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

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

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.0055 × L3.07 (TL)
Max TL
2.3cm
Dorsal Rays
9
Anal Rays
14

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Nagy, 2025

🦠 Common Diseases

The following diseases are known to affect Lacustricola Gemma.

👥 Community & Contribute

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