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💧 Freshwater Least Concern 🐠 Aquarium 🌡️ Tropical

Atlantirivulus Jurubatibensis

Atlantirivulus jurubatibensis Costa, 2008
Max Length
2.6 cm
Max Weight
-
Lifespan
-
Trophic Level
3.1
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
-
Depth Zone
-

📖 Overview

The type locality near the lagoon, to Lagoa do Pires, is part of a series of lagoons close to the sea, isolated from river basins. It is an open area of Restinga vegetation, the swamp dense with aquatic vegetation, clear and acidic (pH 5.28) water .

Scientific Name
Atlantirivulus jurubatibensis
Authority
Costa, 2008
Habitat
Freshwater
Climate
Tropical
Body Shape
Elongated
IUCN Status
LC
Max Length
2.6 cm
Trophic Level
3.1
Resilience
High
Vulnerability
10.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal soft rays (total): 6 - 8; Anal soft rays: 12 - 13; Vertebrae: 31 - 32. This species is distinguished from other species in the Rivulus santensis group in having scales in longitudinal series 30-31 (vs. 32-36); caudal fin light yellow, with a dark gray broad margin along the whole fin (except R. nudiventris, vs. absent in R. depressus, R. lazzarotoi, R. simplicis; margin restricted to dorsal and ventral margins of the caudal fin in R. janeiroensis, R, santensis, and R. haraldsiolii; and black margin, middle with bright green and dark reddish brown to black longitudinal lines in R. luelingi); dorsal part of caudal fin base in females with a small, horizontally elongated black spot (vs. rounded or triangular). This species differs from R. nudiventris by having a pelvic fin (vs. none), lesser caudal-fin rays 25-29 (vs. 30-31) and anal-fin rays 12-13 (vs. 14) .: elongated; Cross section: compressed.

🌀 Behaviour

Behavioural data for Atlantirivulus Jurubatibensis 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
3.1±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.00661 × L3.1 (TL)
Max TL
2.6cm
Dorsal Rays
7
Anal Rays
13
Vertebrae
32

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2018

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.1
Predator
Body Shape
Elongated
Climate Zone
Tropical
Described By
Costa, 2008

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