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💧 Freshwater Least Concern 🌡️ Tropical

Hemiodus Tocantinensis

Hemiodus tocantinensis Langeani, 1999
Max Length
16 cm
Max Weight
-
Lifespan
-
Trophic Level
2.7
Depth
-
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Hemiodus Tocantinensis (Hemiodus tocantinensis) is a ray-finned fish of the family Hemiodontidae. It inhabits freshwater waters. This species can reach a maximum total length of 16 cm. With a trophic level of 2.7, it is an omnivore, consuming both plant and animal matter. It is assessed as Least Concern on the IUCN Red List.

Scientific Name
Hemiodus tocantinensis
Authority
Langeani, 1999
Habitat
Freshwater
Climate
Tropical
IUCN Status
LC
Max Length
16 cm
Trophic Level
2.7
Vulnerability
10.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal soft rays (total): 10 - 11; Anal soft rays: 10 - 11. Distinguished from all other Hemiodus species, except H. ternetzi and H. thayeria, by the presence of a dark longitudinal stripe extending from behind the eye or the opercle to the tip of the lower caudal fin lobe. This species is distinguished from H. ternetzi and H. thayeria by the possession of a dorsal fin oblique blotch, extending from its anterior distal portion through the middle basal portion of the fin.

🌀 Behaviour

Behavioural data for Hemiodus Tocantinensis is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

Distinct pairing .

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical South America: Araguaia and Tocantins River basins in Brazil.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
2.7±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00513 × L3.02 (TL)
Max TL
16cm
Dorsal Rays
11
Anal Rays
11

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2018

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
2.7
Omnivore / Planktivore
Climate Zone
Tropical
Described By
Langeani, 1999

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