💧 Freshwater
🌡️ Tropical
Atlantirivulus Enigmaticus
Atlantirivulus enigmaticus Neto, Amorim & Costa, 2024
📖 Overview
The species is found in marginal areas with fast flowing water 50 cm deep, occupied by submersed macrophytes. Juveniles can be found in even shallower marginal sandy habitats .
Scientific Name
Atlantirivulus enigmaticus
Authority
Neto, Amorim & Costa, 2024
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
Max Length
3.5 cm
Trophic Level
3.2
Resilience
High
Vulnerability
10.00/100
Salinity
0–0.5 ppt
🔬 Taxonomy
Class
Teleostei
Teleostei
Order
Cyprinodontiformes
Cyprinodontiformes
Family
Rivulidae
Rivulidae
Genus
Atlantirivulus
Atlantirivulus
Species
Atlantirivulus Enigmaticus
Atlantirivulus enigmaticus
🐟 Physical Description
Dorsal soft rays (total): 8 - 9; Anal soft rays: 13 - 14. : elongated; Cross section: oval.
🌀 Behaviour
Behavioural data for Atlantirivulus Enigmaticus 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: Brazil.
🌿 Ecology
Zone Preferences
💧 Freshwater
Trophic Level
3.2±0.4
📐 Morphometrics
Length–Weight Relationship:
W = 0.00661 × L3.1
(TL)
Max TL
3.5cm
Dorsal Rays
9
Anal Rays
14
🌡️ Water Parameters & Tolerance
Salinity Range
0–0.5ppt
📊 Population Risk & Fisheries
Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.2
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Neto, Amorim & Costa, 2024
🔍 Similar Species
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