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🌊 Marine Least Concern 🌡️ Tropical

Blue-axil chromis

Pycnochromis caudalis Randall, 1988
Max Length
7.5 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
15–55 m
Climate
Tropical
Resilience
High
Vulnerability
20.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Adults are found around ledges and the bases of small caves of steep outer reef slopes. They occur in small groups that remain close to shelter . Diurnal species . Oviparous, distinct pairing during breeding . Eggs are demersal and adhere to the substrate . Males guard and aerate the eggs .

Scientific Name
Pycnochromis caudalis
Authority
Randall, 1988
Habitat
Marine
Climate
Tropical
Body Shape
Short and / or deep
IUCN Status
LC
Max Length
7.5 cm
Depth Range
15–55 m
Latitude
24°S – 21°N
Trophic Level
3
Resilience
High
Vulnerability
20.00/100
Migration
Non-migratory
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Pycnochromis
Pycnochromis
Species
Blue-axil chromis
Pycnochromis caudalis

🐟 Physical Description

Dorsal spines (total): 12; Dorsal soft rays (total): 12 - 14; Anal spines: 2; Anal soft rays: 12 - 13. : short and / or deep; Cross section: compressed.

🌀 Behaviour

Behavioural data for Blue-axil chromis is currently being reviewed.

🦐 Diet

Diet information for Blue-axil chromis is currently being compiled.

🥚 Reproduction

🐣 Oviparous
Spawn Location
Demersal

Oviparous, distinct pairing during breeding . Eggs are demersal and adhere to the substrate . Males guard and aerate the eggs .

🌍 Habitat & Distribution

Marine; reef-associated; non-migratory; depth range 15 - 55 m . Tropical; 21°N - 24°S, 96°E - 157°W north to the Philippines; Palau to Pohnpei in Micronesia.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Migration
Non-migratory
Trophic Level
3±0.2

📐 Morphometrics

Length–Weight Relationship: W = 0.02089 × L2.98 (TL)
Max TL
7.5cm
Dorsal Spines
12
Dorsal Rays
13
Anal Spines
2
Anal Rays
13

🌡️ 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
20.00/100
Low vulnerability
Trophic Level
3
Predator
Body Shape
Short and / or deep
Climate Zone
Tropical
Latitude Range
21°N – 24°S
Described By
Randall, 1988

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