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🌊 Marine Least Concern 🌡️ Tropical

Yellowtail anthias

Pseudanthias flavicauda Randall & Pyle, 2001
Max Length
6.6 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
30–61 m
Climate
Tropical
Resilience
High
Vulnerability
13.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Yellowtail anthias (Pseudanthias flavicauda) is a ray-finned fish of the family Anthiadidae. It inhabits marine (saltwater) waters in reef-associated environments. This species can reach a maximum total length of 6.6 cm. It occurs at depths between 30 and 61 metres. With a trophic level of 3.3, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List.

Scientific Name
Pseudanthias flavicauda
Authority
Randall & Pyle, 2001
Habitat
Marine
Climate
Tropical
Body Shape
Fusiform / normal
IUCN Status
LC
Max Length
6.6 cm
Depth Range
30–61 m
Trophic Level
3.3
Resilience
High
Vulnerability
13.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 10; Dorsal soft rays (total): 16; Anal spines: 3; Anal soft rays: 7; Vertebrae: 26. Body depth 3.1-3.3 in SL; head length 3.15-3.3 in SL. Posterior edge of orbit without papillae. Caudal fin deeply emarginate to lunate, the caudal concavity 1.05-2.5 in HL. Body of males magenta with a large predominantly yellow area on back between base of 4th dorsal spine and 4th or 5th dorsal soft rays; head pink, suffused with yellow dorsally, with a pink-edged yellow band from eye to pectoral-fin base; fins mainly yellow except anal which is lavender with a yellow band; its upper lip slightly fleshy and finely papillae anteriorly, but not developed to a protuberance; its third dorsal spine moderately elongate, 1.5-1.95 in HL. Females orange-pink, shading to pink ventrally, the scales dorsally on body with dusky yellow centers; caudal fin bright yellow .: fusiform / normal; Cross section: compressed.

🌀 Behaviour

Behavioural data for Yellowtail anthias 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 30 - 61 m . Tropical recorded from Tonga (Ref.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.3±0.4

📐 Morphometrics

Length–Weight Relationship: W = 0.01413 × L3 (TL)
Max TL
6.6cm
Dorsal Spines
10
Dorsal Rays
16
Anal Spines
3
Anal Rays
7
Vertebrae
26

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2015

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
13.00/100
Low vulnerability
Trophic Level
3.3
Predator
Body Shape
Fusiform / normal
Climate Zone
Tropical
Described By
Randall & Pyle, 2001

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