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🌊 Marine Least Concern 🐠 Aquarium 🌡️ Tropical

Greytail angelfish

Chaetodontoplus poliourus Randall & Rocha, 2009
Max Length
8.6 cm
Max Weight
-
Lifespan
-
Trophic Level
-
Depth
1–20 m
Climate
Tropical
Resilience
-
Vulnerability
25.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Very close to Chaetodontoplus mesoleucus (Bloch, 1787) with different colors on pelvic, dorsal and caudal fins. The two species coexist in several islands of Indonesia . These islands include Lesser Sunda Islands. Molucca Islands, Halmahera, and Bird's Nest Peninsula of West Papua .

Scientific Name
Chaetodontoplus poliourus
Authority
Randall & Rocha, 2009
Habitat
Marine
Climate
Tropical
Body Shape
Short and / or deep
IUCN Status
LC
Max Length
8.6 cm
Depth Range
1–20 m
Vulnerability
25.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 12; Dorsal soft rays (total): 17; Anal spines: 3; Anal soft rays: 16 - 17; Vertebrae: 24. This species is distinguished by the following characters: D XII,17 (rarely 16or 18); A III,16 or 17; pectoral rays 15-17 (usually 16); small scales, about 80 in longitudinal series; dorsal series of pored lateral line scales 29-35; gill rakers 4 + 12; supraneural bones 2; body depth 1.70-1.85 in SL; head length 3.15-3.3 in SL; fourth to sixth dorsal spines longest, 1.1-1.3 in HL. Preserved color head and anterior body pale yellowish grey to an approximate oblique demarcation connecting base of second to third dorsal spine to anus, gradually changing posteriorly in an intermediate zone containing pectoral fin to one of irregular longitudinal lines on dark brown; a dark brown bar from nape, broadening as it passes through eye, then curving and narrowing as it ends shortly before origin of pelvic fins; front of lips brown; dorsal and anal fins colored as adjacent body; caudal fin abruptly pale grey; paired fins pale yellowish. Color in life: dark brown posteriorly with white dots, which merge anteriorly to form narrow irregular white lines; dark brown of body progressively lighter anteriorly, becoming pale grey at demarcation, then gradually changing to pale yellow on head; ocular bar black, narrowly edged in bluish white; snout and chest yellow, the front lips blue which sometimes continue as a narrow triangle medially in front of snout; first 3-4 dorsal spines and membranes yellow, the rest of fin dark brown with rows of white dots paralleling rays on about basal 3/4 of fin; narrow white or blue margin on soft part of fin; anal fin similar, but not yellow anteriorly; caudal fin grey with a narrow yellow posterior border; pectoral fins pale grey; pelvic fins bright yellow .: short and / or deep.

🌀 Behaviour

Behavioural data for Greytail angelfish 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; reef-associated; depth range 1 - 20 m . Tropical

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated

📐 Morphometrics

Length–Weight Relationship: W = 0.02951 × L2.89 (TL)
Max TL
8.6cm
Dorsal Spines
12
Dorsal Rays
17
Anal Spines
3
Anal Rays
17
Vertebrae
24

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2009

📊 Population Risk & Fisheries

Fishing Vulnerability
25.00/100
Low vulnerability
Body Shape
Short and / or deep
Climate Zone
Tropical
Described By
Randall & Rocha, 2009

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