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💧 Freshwater 🌡️ Tropical

Tachysurus Brachyrhabdion

Tachysurus brachyrhabdion Cheng, Ishihara & Zhang, 2008
Max Length
20.7 cm
Max Weight
-
Lifespan
-
Trophic Level
3.6
Depth
-
Climate
Tropical
Resilience
Medium
Vulnerability
34.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Tachysurus Brachyrhabdion (Tachysurus brachyrhabdion), first described by Cheng, Ishihara & Zhang, 2008 is a medium-sized fish in the family Bagridae (order Siluriformes). Adults typically reach 20.70 cm in maximum length. It inhabits freshwater systems including rivers, streams, and lakes. It occurs in Tropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator.

Scientific Name
Tachysurus brachyrhabdion
Authority
Cheng, Ishihara & Zhang, 2008
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
Max Length
20.7 cm
Trophic Level
3.6
Resilience
Medium
Vulnerability
34.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 1; Dorsal soft rays (total): 7; Anal soft rays: 20 - 23. Differs from all congeners with a similar caudal-fin shape (truncate or slightly emarginate) by the following unique combination of characters: supraoccipital plate and nuchal plate broadly interspaced and covered with skin; nasal barbels only at most reaching anterior margin of eye; maxillary barbels reaching slightly beyond posterior margin of eye; outer mandibular barbels reaching posterior margin of eye; dorsal fin with a slightly convex distal margin, origin nearer to pectoral-fin insertion than to pelvic-fin insertion; dorsal-fin spine shorter than pectoral spine, with a slightly serrated posterior margin; pectoral-fin spine with a smooth anterior margin; anal fin with 20-23 rays, base length 23.8-32.0% SL, posterior end of anal-fin base anterior to posterior end of adipose fin base; no longitudinal black band extending along flank; eyes large, diameter 16.3-23.7% HL; and vertebrae 5 + 43-46 . : elongated.

🌀 Behaviour

Behavioural data for Tachysurus Brachyrhabdion is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; demersal. Tropical

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Trophic Level
3.6±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.01 × L2.92 (TL)
Max TL
20.7cm
Dorsal Spines
1
Dorsal Rays
7
Anal Rays
22

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
34.00/100
Low vulnerability
Trophic Level
3.6
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Cheng, Ishihara & Zhang, 2008

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