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💧 Freshwater Near Threatened 🐠 Aquarium 🌡️ Tropical

Australoheros Guarani

Australoheros guarani Říčan & Kullander, 2008
Max Length
12.9 cm
Max Weight
-
Lifespan
-
Trophic Level
3.2
Depth
-
Climate
Tropical
Resilience
Medium
Vulnerability
19.00/100
Typical Length
-
Depth Zone
-

📖 Overview

Australoheros Guarani (Australoheros guarani) is a ray-finned fish of the family Cichlidae. It inhabits freshwater waters. This species can reach a maximum total length of 12.9 cm. With a trophic level of 3.2, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Near Threatened on the IUCN Red List.

Scientific Name
Australoheros guarani
Authority
Říčan & Kullander, 2008
Habitat
Freshwater
Climate
Tropical
IUCN Status
NT
Max Length
12.9 cm
Trophic Level
3.2
Resilience
Medium
Vulnerability
19.00/100
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 15 - 17; Dorsal soft rays (total): 8 - 10; Anal spines: 6 - 7; Anal soft rays: 7 - 8; Vertebrae: 26. This species is distinguished by having the largest scales between the dorsal fin and upper lateral line, only 2 ½ scales (vs. 3 ½); similar to A. facetus, cf. facetus, and minuano in coloration patterns. It is the same with forquilha and tembe, in having a small and inconspicuous midlateral blotch and a straight midlateral stripe (if present), running along the flank in the limits of E0 and E1 scale rows; differs with both in having lower meristics, such as 13 caudal vertebrae (vs. 14 or more), a shorter caudal peduncle, shorter scale cover of the dorsal fin, larger (and fewer) scales and a narrower interorbital space .

🌀 Behaviour

Behavioural data for Australoheros Guarani is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 👄 Mouth Brooder 🛡️ Egg Guarder
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; benthopelagic. Tropical South America: Río Paraná tributaries, Paraguay.

🌿 Ecology

Zone Preferences
💧 Freshwater
Trophic Level
3.2±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.01445 × L3.08 (TL)
Max TL
12.9cm
Dorsal Spines
16
Dorsal Rays
9
Anal Spines
7
Anal Rays
8
Vertebrae
26

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Near Threatened
Assessment Date
2021

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
19.00/100
Low vulnerability
Trophic Level
3.2
Predator
Climate Zone
Tropical
Described By
Říčan & Kullander, 2008

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