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🌊 Marine Least Concern 🌡️ Subtropical

Opalfish

Hemerocoetes monopterygius Schneider, 1801
Max Length
28 cm
Max Weight
-
Lifespan
3 yrs
Trophic Level
3.6
Depth
-
Climate
Subtropical
Resilience
Medium
Vulnerability
33.00/100
Typical Length
-
Depth Zone
demersal

📖 Overview

Opalfish (Hemerocoetes monopterygius), first described by Schneider, 1801 is a medium-sized fish in the family Hemerocoetidae (order Acropomatiformes). Adults typically reach 28.00 cm in maximum length. Reported lifespan reaches approximately 3 years. It inhabits marine coastal and open-ocean environments. It occurs in Subtropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. On the IUCN Red List, it is classified as Least Concern.

Scientific Name
Hemerocoetes monopterygius
Authority
Schneider, 1801
Habitat
Marine
Climate
Subtropical
IUCN Status
LC
Max Length
28 cm
Lifespan
3 years
Trophic Level
3.6
Resilience
Medium
Vulnerability
33.00/100
Salinity
30–40 ppt

🐟 Physical Description

Physical description for Opalfish is currently being compiled.

🌀 Behaviour

Behavioural data for Opalfish 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. Subtropical Southwest Pacific: New Zealand.

🌿 Ecology

Zone Preferences
🌊 Marine ⬇️ Benthic
Trophic Level
3.6±0.5

📐 Morphometrics

Length–Weight Relationship: W = 0.00389 × L3.12 (TL)
Max TL
28cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2009

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
33.00/100
Low vulnerability
Trophic Level
3.6
Predator
Climate Zone
Subtropical
Described By
Schneider, 1801

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