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💧 Freshwater Least Concern 🐠 Aquarium 🌡️ Tropical

Gastromyzon Praestans

Gastromyzon praestans Tan, 2006
Max Length
5.5 cm
Max Weight
-
Lifespan
-
Trophic Level
2.2
Depth
-
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Gastromyzon Praestans (Gastromyzon praestans), first described by Tan, 2006 is a small fish in the family Balitoridae (order Cypriniformes). Adults typically reach 5.50 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 Least Concern.The species is kept in the aquarium hobby. Care requirements and behaviour align broadly with other Balitoridae kept in the hobby.

Scientific Name
Gastromyzon praestans
Authority
Tan, 2006
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
5.5 cm
Trophic Level
2.2
Vulnerability
10.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal soft rays (total): 8 - 9; Anal soft rays: 5 - 6; Vertebrae: 28. Can be distinguished from other species of the genus by possessing the following unique combination of characters: gill slit angular; subopercular groove present and not continuous to pectoral fin origin; body dark brown or bluish dark, dorsum with 6 thin cream bars, dorsal fin base always with 1 bar, side with complete or interrupted bars; head dorsum dark brown or bluish black with cream spots; sublacrymal groove present; a rounded snout when viewed dorsally; secondary rostrum absent; post-oral pouch absent; abdomen without scales; lateral line scales 56-70; pelvic fin not overlapping anal fin origin, adpressed dorsal fin not overlapping level of anal fin origin .: elongated.

🌀 Behaviour

Behavioural data for Gastromyzon Praestans 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
2.2±0.1

📐 Morphometrics

Length–Weight Relationship: W = 0.00646 × L3.11 (TL)
Max TL
5.5cm
Dorsal Rays
9
Anal Rays
6
Vertebrae
28

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2019

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
2.2
Omnivore / Planktivore
Body Shape
Elongated
Climate Zone
Tropical
Described By
Tan, 2006

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