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🌊 Marine 🌡️ Tropical

Pacific bronze Chromis

Pycnochromis pacifica Allen & Erdmann, 2020
Max Length
7.6 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
5–56 m
Climate
Tropical
Resilience
High
Vulnerability
21.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Benthopelagic . Feeds on planktons . Diurnal species. Oviparous, distinct pairing during breeding . Eggs are demersal and adhere to the substrate . Males guard and aerate the eggs .

Scientific Name
Pycnochromis pacifica
Authority
Allen & Erdmann, 2020
Habitat
Marine
Climate
Tropical
Max Length
7.6 cm
Depth Range
5–56 m
Latitude
30°S – 31°N
Trophic Level
3
Resilience
High
Vulnerability
21.00/100
Migration
Non-migratory
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Pycnochromis
Pycnochromis
Species
Pacific bronze Chromis
Pycnochromis pacifica

🐟 Physical Description

Dorsal spines (total): 12; Dorsal soft rays (total): 12 - 14; Anal spines: 2; Anal soft rays: 12 - 14; Vertebrae: 26. This species is distinguished by the following set of characters: D XII,12-14 (usually XII,13); A II,12-14 (usually II,13); pectoral-fin rays 16-18 (usually 17); spiniform caudal-fin rays 2; tubed lateral-line scales 14-17 (usually 15-16); total gill rakers on first branchial arch 27-32; body depth 1.8-2.0 (mean 1.9) in SL. Colouration: in life overall yellowish brown, typically with lateral greyish to purplish stripes along scale rows; the dorsal and anal fins are brownish with dark-brown triangular marking posteriorly and caudal fin yellowish; pectoral fin with a prominent round, blackish spot covering the entire base and axil .Cross section: compressed.

🌀 Behaviour

Behavioural data for Pacific bronze Chromis is currently being reviewed.

🦐 Diet

Diet information for Pacific bronze 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 5 - 56 m . Tropical; 31°N - 30°S

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Migration
Non-migratory
Trophic Level
3±0.24
Food Items

planktons (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.02089 × L2.98 (TL)
Max TL
7.6cm
Dorsal Spines
12
Dorsal Rays
13
Anal Spines
2
Anal Rays
13
Vertebrae
26

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
21.00/100
Low vulnerability
Trophic Level
3
Predator
Climate Zone
Tropical
Latitude Range
31°N – 30°S
Described By
Allen & Erdmann, 2020

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