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💧 Freshwater Least Concern 🌡️ Tropical

Schizodon Scotorhabdotus

Schizodon scotorhabdotus Sidlauskas, Garavello & Jellen, 2007
Max Length
27.1 cm
Max Weight
-
Lifespan
-
Trophic Level
2.5
Depth
-
Climate
Tropical
Resilience
Medium
Vulnerability
39.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Found in lagoons, pools, small caños and cattle pastures, all relatively lentic habitats . Herbivorous, preferring macrophytes . Distinct pairs breed on densely grown weedy places .

Scientific Name
Schizodon scotorhabdotus
Authority
Sidlauskas, Garavello & Jellen, 2007
Habitat
Freshwater
Climate
Tropical
IUCN Status
LC
Max Length
27.1 cm
Trophic Level
2.5
Resilience
Medium
Vulnerability
39.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal soft rays (total): 11 - 12; Anal soft rays: 9; Vertebrae: 40 - 42. Can be separated from all congeners, except Schizodon isognathus, Schizodon knerii, and Schizodon nasutus, by the presence of a dark stripe running along the lateral-line-scale row from the rear of the opercle to the caudal peduncle (vs. absence of midlateral stripe in Schizodon altoparanae, Schizodon australis, Schizodon borelli, Schizodon corti, Schizodon dissimilis, Schizodon fasciatus, Schizodon intermedius, Schizodon platae, and Schizodon rostratus), and midlateral stripe extending no further anteriorly than to vertical drawn through dorsal-fin origin in Schizodon jacuiensis and Schizodon vittatus). Differs from Schizodon nasutus by a terminal or slightly upturned mouth (vs. a strongly subterminal mouth). Can be differentiated from Schizodon isognathus and Schizodon knerii by having 4 or 4.5 transverse scale rows above the lateral line to the dorsal-fin origin (vs. 6.5 scale rows [rarely 5.5 in Schizodon knerii]), 4 or 4.5 transverse scale rows below the lateral line to the anal-fin origin (vs. 5.5 scale rows [rarely 4.5 in Schizodon knerii]) and seven branched anal-fin rays (vs. eight). Differs further from Schizodon isognathus by the presence of three or four vertical dark blotches on the lateral surfaces of the body intersecting the prominent lateral stripe (vs. vertical blotches absent) and a terminal mouth in adults (vs. a slightly subterminal mouth in adults); and Schizodon knerii by having only 16 circumpeduncular scales (vs. 18-20) .

🌀 Behaviour

Behavioural data for Schizodon Scotorhabdotus is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

Distinct pairs breed on densely grown weedy places .

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical South America: Río Orinoco system in Venezuela and Colombia.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
2.5±0.2

📐 Morphometrics

Length–Weight Relationship: W = 0.00776 × L3.07 (TL)
Max TL
27.1cm
Dorsal Rays
12
Anal Rays
9
Vertebrae
41

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2020

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
39.00/100
Moderate vulnerability
Trophic Level
2.5
Omnivore / Planktivore
Climate Zone
Tropical
Described By
Sidlauskas, Garavello & Jellen, 2007

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