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💧 Freshwater Vulnerable 🐠 Aquarium 🌡️ Tropical

Rhodeus Laoensis

Rhodeus laoensis Kottelat, Doi & Musikasinthorn, 1998
Max Length
4.7 cm
Max Weight
-
Lifespan
-
Trophic Level
2.7
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
20.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Rhodeus Laoensis (Rhodeus laoensis), first described by Kottelat, Doi & Musikasinthorn, 1998 is a tiny fish in the family Cyprinidae (order Cypriniformes). Adults typically reach 4.70 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 Vulnerable.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Cyprinidae kept in the hobby.

Scientific Name
Rhodeus laoensis
Authority
Kottelat, Doi & Musikasinthorn, 1998
Habitat
Freshwater
Climate
Tropical
IUCN Status
VU
Max Length
4.7 cm
Trophic Level
2.7
Resilience
High
Vulnerability
20.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 13; Anal spines: 0; Anal soft rays: 15. Having last simple dorsal and anal rays strong and stiff (but not a spine); 11 branched dorsal rays; 13 branched anal rays; 32-33+1-2=33-35 scales in longitudinal series; predorsal fin profile of males slightly concave; pelvic, dorsal and anal fins of males with narrow black distal margins; very narrow stripe along the posterior side of males ; and long ovipositor present in front of anal fin of females .

🌀 Behaviour

Behavioural data for Rhodeus Laoensis is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

Female has an ovipositor which is used to deposit eggs inside bivalves. Young remain in the bivalve until they can swim .

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
2.7±0.2

📐 Morphometrics

Length–Weight Relationship: W = 0.0166 × L3.02 (TL)
Max TL
4.7cm
Dorsal Rays
13
Anal Rays
15

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Vulnerable
Assessment Date
2011

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
20.00/100
Low vulnerability
Trophic Level
2.7
Omnivore / Planktivore
Climate Zone
Tropical
Described By
Kottelat, Doi & Musikasinthorn, 1998

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