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🌊 Marine Least Concern 🍽️ Edible 🌡️ Tropical

Chocolate-dip Chromis

Pycnochromis hanui Randall & Swerdloff, 1973
Max Length
6 cm
Max Weight
-
Lifespan
-
Trophic Level
3
Depth
6–50 m
Climate
Tropical
Resilience
High
Vulnerability
15.00/100
Typical Length
-
Depth Zone
reef

📖 Overview

Adults inhabit inshore and offshore coral reefs. They are found in aggregations above corals . Benthopelagic . Oviparous, distinct pairing during breeding . Eggs are demersal and adhere to the substrate . Males guard and aerate the eggs .

Scientific Name
Pycnochromis hanui
Authority
Randall & Swerdloff, 1973
Habitat
Marine
Climate
Tropical
Body Shape
Short and / or deep
IUCN Status
LC
Max Length
6 cm
Depth Range
6–50 m
Trophic Level
3
Resilience
High
Vulnerability
15.00/100
Migration
Non-migratory
Salinity
30–40 ppt

🔬 Taxonomy

Genus
Pycnochromis
Pycnochromis
Species
Chocolate-dip Chromis
Pycnochromis hanui

🐟 Physical Description

Dorsal spines (total): 12; Dorsal soft rays (total): 13; Anal spines: 2; Anal soft rays: 13 - 14. Body short, almost round. Color is brown with a black spot on the pectoral fin base. The caudal fin, caudal peduncle and the adjacent portion of the dorsal and anal fins white.: short and / or deep; Cross section: compressed.

🌀 Behaviour

Behavioural data for Chocolate-dip Chromis is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 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 6 - 50 m . Tropical; 28°N - 17°N Central Pacific: confined to the Hawaiian Islands.

🌿 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
6cm
Dorsal Spines
12
Dorsal Rays
13
Anal Spines
2
Anal Rays
14

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2021

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
15.00/100
Low vulnerability
Trophic Level
3
Predator
Body Shape
Short and / or deep
Climate Zone
Tropical
Described By
Randall & Swerdloff, 1973

🍽️ Edibility & Flavour

⚡ Nutrition

Per 100g cooked - Source: USDA FoodData Central

Nutrient Amount
Protein 18 g
Omega-3 (total) 137 mg

🔬 Mercury Safety

Mercury data for Chocolate-dip Chromis has not yet been assigned. Please consult FDA/EPA guidance for general seafood safety advice.

🌿 Sustainability

Best Choice
Healthy stocks, low impact
Good Alternative
Well-managed, minor concerns
Use Caution
Check sourcing and season
Avoid
Overfished or high impact

📊 Population Dynamics

Year Region Index Notes
- - -

👥 Community & Contribute

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