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🌊 Marine Least Concern 🐠 Aquarium 🌡️ Tropical

Triple-banded butterflyfish

Roa australis Kuiter, 2004
Max Length
11.9 cm
Max Weight
-
Lifespan
-
Trophic Level
3.7
Depth
97–173 m
Climate
Tropical
Resilience
High
Vulnerability
15.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Triple-banded butterflyfish (Roa australis) is a ray-finned fish of the family Chaetodontidae. It inhabits marine (saltwater) waters in pelagic environments. This species can reach a maximum total length of 11.9 cm. It occurs at depths between 97 and 173 metres. With a trophic level of 3.7, it is a mid-level predator. It is assessed as Least Concern on the IUCN Red List.

Scientific Name
Roa australis
Authority
Kuiter, 2004
Habitat
Marine
Climate
Tropical
Body Shape
Short and / or deep
IUCN Status
LC
Max Length
11.9 cm
Depth Range
97–173 m
Trophic Level
3.7
Resilience
High
Vulnerability
15.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 11; Dorsal soft rays (total): 19 - 23; Anal spines: 3; Anal soft rays: 17. This species has the following characters: D XI,20; A III,17; pectoral-fin rays 14; 43 tubed lateral-line scales; body depth 73.2% in SL; light brown in color with body uniformly pale, the head somewhat darker, a dark elongated spot between 2nd and 7th soft dorsal fin rays, bordered anteriorly by a pale area of similar width, and extending onto membrane between last spine and first ray .: short and / or deep.

🌀 Behaviour

Behavioural data for Triple-banded butterflyfish is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring-summer
Spawn Location
Pelagic
Fertilization
External

🌍 Habitat & Distribution

Marine; pelagic-neritic; depth range 97 - 173 m . Tropical West Pacific: off the northwest coast of Australia.

🌿 Ecology

Zone Preferences
🌊 Marine 🐟 Pelagic
Trophic Level
3.7±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.02239 × L3.01 (TL)
Max TL
11.9cm
Dorsal Spines
11
Dorsal Rays
21
Anal Spines
3
Anal Rays
17

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2010

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
15.00/100
Low vulnerability
Trophic Level
3.7
Predator
Body Shape
Short and / or deep
Climate Zone
Tropical
Described By
Kuiter, 2004

🦠 Common Diseases

The following diseases are known to affect Triple-banded butterflyfish.

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