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💧 Freshwater Near Threatened 🐠 Aquarium 🌡️ Tropical

Gastromyzon Umbrus

Gastromyzon umbrus Tan, 2006
Max Length
5.1 cm
Max Weight
-
Lifespan
-
Trophic Level
2.3
Depth
-
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Gastromyzon Umbrus (Gastromyzon umbrus), first described by Tan, 2006 is a small fish in the family Balitoridae (order Cypriniformes). Adults typically reach 5.10 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical waters. It feeds primarily on plankton, plant material, and detritus. On the IUCN Red List, it is classified as Near Threatened.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Balitoridae kept in the hobby.

Scientific Name
Gastromyzon umbrus
Authority
Tan, 2006
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
IUCN Status
NT
Max Length
5.1 cm
Trophic Level
2.3
Vulnerability
10.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal soft rays (total): 8; Anal soft rays: 5; Vertebrae: 29 - 30. Can be distinguished from other species of the genus by possessing the following unique combination of characters: gill slit angular; subopercular groove present and continuous to pectoral fin origin; body dark brown; head dorsum dark brown; sublacrymal groove present; a rounded snout when viewed dorsally; secondary rostrum absent; post-oral pouch absent; abdomen without scales; lateral line scales 50-52; pelvic fin overlapping anal fin origin, adpressed dorsal fin overlapping level of anal fin origin .: elongated.

🌀 Behaviour

Behavioural data for Gastromyzon Umbrus is currently being reviewed.

🦐 Diet

algae
aquatic plants
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; demersal. Tropical

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Trophic Level
2.3±0.1

📐 Morphometrics

Length–Weight Relationship: W = 0.00646 × L3.11 (TL)
Max TL
5.1cm
Dorsal Rays
8
Anal Rays
5
Vertebrae
30

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Near Threatened
Assessment Date
2019

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
2.3
Omnivore / Planktivore
Body Shape
Elongated
Climate Zone
Tropical
Described By
Tan, 2006

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