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💧 Freshwater Critically Endangered 🌡️ Subtropical

Opal pearlfish

Leptolebias opalescens Myers, 1942
← All Species
Max Length
4 cm
Max Weight
-
Lifespan
-
Trophic Level
3.1
Depth
-
Climate
Subtropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Aquarium conditions preferred: pH=6.8, H=7, 25°C, with rocks, plants and driftwood. Carnivorous, egg laying and peaceful community fish . Bottom spawner, 4 months incubation. Is very difficult to maintain in aquarium .

Scientific Name
Leptolebias opalescens
Authority
Myers, 1942
Habitat
Freshwater
Climate
Subtropical
IUCN Status
CR
Max Length
4 cm
Trophic Level
3.1
Resilience
High
Vulnerability
10.00/100
Migration
Non-migratory
Water Temp
22–27 °C
Salinity
0–0.5 ppt

🔬 Taxonomy

Kingdom
Animalia
Phylum
Chordata
Class
Teleostei
Teleostei
Order
Cyprinodontiformes
Cyprinodontiformes
Family
Rivulidae
Rivulidae
Genus
Leptolebias
Leptolebias
Species
Opal pearlfish
Leptolebias opalescens

🐟 Physical Description

Physical description for Opal pearlfish is currently being compiled.

🌀 Behaviour

Behavioural data for Opal pearlfish 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; non-migratory. Subtropical; 22°C - 27°C ; 23°S - 24°S South America: Atlantic coastal river basin in Brazil.

🌿 Ecology

Zone Preferences
💧 Freshwater
Migration
Non-migratory
Trophic Level
3.1±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00603 × L3.14 (TL)
Max TL
4cm

🌡️ Water Parameters & Tolerance

Temperature Range
22–27°C
Salinity Range
0–0.5ppt

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.1
Predator
Climate Zone
Subtropical
Described By
Myers, 1942

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

Aquareap Community Observations
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View all observations for Opal pearlfish ↗
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