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💧 Freshwater Least Concern 🌡️ Tropical

Amazonspinther Dalmata

Amazonspinther dalmata Bührnheim, Carvalho, Malabarba & Weitzman, 2008
Max Length
2 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
0–1 m
Climate
Tropical
Resilience
-
Vulnerability
10.00/100
Typical Length
-
Depth Zone
-

📖 Overview

The type locality has slow current, muddy substratum, and silty, turbid water with abundant riparian vegetation and with maximum depth of 1.3 m. Also collected in a perceptible current with some submerged vegetation, transparent water, sandy and muddy substratum and riparian vegetation .

Scientific Name
Amazonspinther dalmata
Authority
Bührnheim, Carvalho, Malabarba & Weitzman, 2008
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
2 cm
Depth Range
0–1 m
Trophic Level
3
Vulnerability
10.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

Genus
Amazonspinther
Amazonspinther
Species
Amazonspinther Dalmata
Amazonspinther dalmata

🐟 Physical Description

Dorsal soft rays (total): 11; Anal soft rays: 11. The presence of three conspicuous black blotches on the base of the dorsal, anal, and caudal fins separates this species from all characid species. Distinguished from all other species of the Cheirodontinae by two uniquely derived characters, the anteriormost proximal radial of the anal fin with an anteriorly extended lamina entering the abdominal cavity, between the distal portions of the 12th to 14th pleural ribs and by the extremely elongate caudal peduncle 27.3-30.2% SL. Can be further diagnosed by having ventral procurrent caudal-fin rays 7-9 and hemal spines of one, two or sometimes three posterior caudal vertebrae directly articulating with the ventral procurrent caudal-fin rays . : elongated.

🌀 Behaviour

Behavioural data for Amazonspinther Dalmata 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; depth range 0 - 1 m . Tropical South America: Rio Purus and Rio Madeira basins in Brazil.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
2cm
Dorsal Rays
11
Anal Rays
11

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2022

📊 Population Risk & Fisheries

Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Bührnheim, Carvalho, Malabarba & Weitzman, 2008

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