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💧 Freshwater Critically Endangered 🌡️ Tropical

Rectoris Longibarbus

Rectoris longibarbus Zhu, Zhang & Lan, 2012
Max Length
13 cm
Max Weight
-
Lifespan
-
Trophic Level
-
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
24.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Found in a temporary pool of water spilled from a karst cave during the annual rainy season. (late June to August). Sympatric with Rectoris posehensis, Yunnanilus jingxiensis, Pseudogyrinocheilus longisulcus and Cophecheilus bamen .

Scientific Name
Rectoris longibarbus
Authority
Zhu, Zhang & Lan, 2012
Habitat
Freshwater
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
CR
Max Length
13 cm
Resilience
High
Vulnerability
24.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal soft rays (total): 11; Anal soft rays: 8. Differs from two other congeners, i.e. Rectoris mutabilis and R. posehensis, by having a dumbbell-like (vs. slender) posterior chamber of the gas bladder, almost equal to (vs. twice as long as) the anterior chamber, and longer rostral barbels (vs. shorter) than eye diameter, with their lengths 21.0-24.7% of HL (vs. 10.2-18.8). Similar to R. posehensis in having a longitudinal black stripe running along the lateral line on the flank, but can be further diagnosed from this species in having a slightly papillated posteromedian patch on the median plate of the lower lip (vs. no patch); and similar to R. mutabilis in the shared presence of a papillated posteromedian patch on the median plate of the lower lip, but further differs from this species in its longitudinal black stripe running along the lateral line on the flank (vs. stripe absent) .: fusiform / normal.

🌀 Behaviour

Behavioural data for Rectoris Longibarbus 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. Tropical

🌿 Ecology

Zone Preferences
💧 Freshwater

📐 Morphometrics

Length–Weight Relationship: W = 0.00933 × L3.05 (TL)
Max TL
13cm
Dorsal Rays
11
Anal Rays
8

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Critically Endangered
Assessment Date
2023

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
24.00/100
Low vulnerability
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Zhu, Zhang & Lan, 2012

🦠 Common Diseases

The following diseases are known to affect Rectoris Longibarbus.

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