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💧 Freshwater Least Concern 🌡️ Tropical

Mesensis tube-snouted ghost knifefish

Sternarchorhynchus mesensis Paz, 2000
Max Length
24.9 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
-
Climate
Tropical
Resilience
-
Vulnerability
13.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Collected from caves within the São Domingos karst region in the upper portions of the Rio Tocantins basin. The species occur in both subterranean and surface drainages and appears to be well adapted to epigean habitats as indicated by the overall condition and sexual maturity of the individuals from cave habitats .

Scientific Name
Sternarchorhynchus mesensis
Authority
Paz, 2000
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
24.9 cm
Trophic Level
3.3
Vulnerability
13.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

Kingdom
Animalia
Phylum
Chordata
Class
Teleostei
Teleostei
Order
Gymnotiformes
Gymnotiformes
Family
Apteronotidae
Apteronotidae
Genus
Sternarchorhynchus
Sternarchorhynchus
Species
Mesensis tube-snouted ghost knifefish
Sternarchorhynchus mesensis

🐟 Physical Description

Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 171 - 189; Vertebrae: 80 - 110. Distinguished from its congeners by the following combination of features: mouth length 5.4-6.4 %HL; postocular distance 36.4-41.0 %HL; pectoral fin length 27.0-35.3 %HL; scales always present above lateral line at anterodorsal region of body, in 11-13 rows above lateral line at midbody; anterior unbranched anal-fin rays 23-28; and a white to yellowish-white (sometimes indistinct) band on frontal portion of head and middorsum; caudal fin with 13-15 rays .: elongated; Cross section: compressed.

🌀 Behaviour

Behavioural data for Mesensis tube-snouted ghost knifefish 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 South America: Tocantins River basin.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.3±0.3

📐 Morphometrics

Length–Weight Relationship: W = 0.00347 × L3.06 (TL)
Max TL
24.9cm
Anal Rays
180
Vertebrae
95

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2018

📊 Population Risk & Fisheries

Fishing Vulnerability
13.00/100
Low vulnerability
Trophic Level
3.3
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Paz, 2000

🌐 Names & Taxonomy

Language Common Names
🌍CES nožovka mesanská

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 1 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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