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🌊 Marine 🍽️ Edible 🌡️ Subtropical

Opaline razorfish

Iniistius opalus Fukui, 2018
Max Length
16.1 cm
Max Weight
-
Lifespan
-
Trophic Level
3.5
Depth
15–64 m
Climate
Subtropical
Resilience
High
Vulnerability
27.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Opaline razorfish (Iniistius opalus) is a ray-finned fish of the family Labridae. It inhabits marine (saltwater) waters in benthic environments. This species can reach a maximum total length of 16.1 cm. It occurs at depths between 15 and 64 metres. With a trophic level of 3.5, it is a low-level carnivore, feeding on invertebrates and small organisms. Commercially fished and consumed as food.

Scientific Name
Iniistius opalus
Authority
Fukui, 2018
Habitat
Marine
Climate
Subtropical
Body Shape
Short and / or deep
Max Length
16.1 cm
Depth Range
15–64 m
Trophic Level
3.5
Resilience
High
Vulnerability
27.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal spines (total): 9; Dorsal soft rays (total): 12; Anal spines: 3; Anal soft rays: 11 - 13. This species can be distinguished from other congeners in having a broad band of small scale rows on the cheek; with a single small scale below the eye; the first two dorsal-fin spines are short, their length similar to those of other spines of dorsal fin; central gill-raker of lower limb of first gill arch with a single branch; greate body depth 33.5-39.2% SL; several small blotches on the anal-fin base; scale rows below lateral line 10; first upper limb of gill arch with four branches on central gill-raker; head length 32.9-36.0% (mean 34.3%); pre-pectoral-fin length 29.8-32.5% (31.2%); orbit diameter 6.1-7.3% (6.8%); postorbital length 14.9-18.4% (16.8%); small blotches on head .: short and / or deep; Cross section: compressed.

🌀 Behaviour

Behavioural data for Opaline razorfish 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; demersal; depth range 15 - 64 m . Subtropical West Pacific: northern Australia.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.5±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.01995 × L3.01 (TL)
Max TL
16.1cm
Dorsal Spines
9
Dorsal Rays
12
Anal Spines
3
Anal Rays
12

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
27.00/100
Low vulnerability
Trophic Level
3.5
Predator
Body Shape
Short and / or deep
Climate Zone
Subtropical
Described By
Fukui, 2018

🍽️ Edibility & Flavour

"Iniistius Opalus is an edible species."

✗ Not for Raw
✓ Fresh Indicators
  • Clear, bright eyes — cloudy eyes indicate age
  • Firm flesh that springs back when pressed
  • Fresh ocean smell, never strong or ammonia-like
  • Bright red or pink gills, not grey or brown
  • Shiny, moist skin with scales tightly attached
✗ Avoid If
  • Cloudy or sunken eyes
  • Strong fishy or ammonia odour
  • Soft, mushy flesh that doesn't spring back
  • Discoloured or dry flesh
Best Cooking Methods
Baking Grilling Pan-frying

⚡ Nutrition

Detailed nutritional data for Opaline razorfish is currently being compiled from USDA FoodData Central.

🔬 Mercury Safety

Mercury data for Opaline razorfish 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

🔬 Full Nutritional Profile

Per 100g - Raw, per 100g - Source: USDA FoodData Central templates (generic fish average)

Proximate Composition
Energy125 kcal
Moisture75 %
Protein20 %
Total Fat4 %
Ash1.3 %
Fatty Acids (g)
Saturated Fat1 g
Monounsaturated Fat1.2 g
Polyunsaturated Fat1.5 g
Omega-3 Total1 g
EPA0.3 g
DHA0.5 g
Omega-6 Total0.3 g
Key Minerals & Vitamins
Calcium20 mg
Iron0.7 mg
Magnesium30 mg
Phosphorus220 mg
Potassium380 mg
Sodium55 mg
Zinc0.5 mg
Selenium32 µg
Vitamin B122 µg

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