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Diadromous 🌡️ Temperate

Smallmouth hardyhead

Atherinosoma microstoma Günther, 1861
Max Length
10.7 cm
Max Weight
-
Lifespan
-
Trophic Level
3.4
Depth
0–8 m
Climate
Temperate
Resilience
Medium
Vulnerability
31.00/100
Typical Length
-
Depth Zone
pelagic

📖 Overview

Found in shallow coastal bays, estuaries and lakes ranging from pure fresh to salinities in excess of seawater . Occurs abundantly in in estuaries around eel-grass thickets, occasionally penetrating the lower freshwater reaches of rivers. Feeds on tiny crustaceans and insects. Breeds in spring (September to October). An annual species (living for only one year), dying shortly after spawning .

Scientific Name
Atherinosoma microstoma
Authority
Günther, 1861
Habitat
Diadromous
Climate
Temperate
Max Length
10.7 cm
Depth Range
0–8 m
Trophic Level
3.4
Resilience
Medium
Vulnerability
31.00/100
Migration
Anadromous
Salinity
30–40 ppt

🔬 Taxonomy

🐟 Physical Description

Physical description for Smallmouth hardyhead is currently being compiled.

🌀 Behaviour

Behavioural data for Smallmouth hardyhead is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous 📦 Batch Spawner
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Marine; freshwater; brackish; pelagic-neritic; anadromous ; depth range 0 - 8 m . Temperate; 33°S - 40°S Southwest Pacific: endemic to Australia.

🌿 Ecology

Zone Preferences
🌊 Marine 💧 Freshwater 🌿 Brackish 🐟 Pelagic
Migration
Anadromous
Trophic Level
3.4±0.4
Food Items

tiny crustaceans and insects

📐 Morphometrics

Length–Weight Relationship: W = 0.00537 × L3.09 (TL)
Max TL
10.7cm

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

📊 Population Risk & Fisheries

Population Resilience
Medium
Minimum doubling time
Fishing Vulnerability
31.00/100
Low vulnerability
Trophic Level
3.4
Predator
Climate Zone
Temperate
Described By
Günther, 1861

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Endora's Hardyhead · Fanged Hardyhead · Greyback · Small-mouthed Hardyhead · Smallmouth Hardyhead · Smallmouthed Hardyhead
🌍CES gavún maloústý
🇷🇺Russian Малоротая атериносома

Scientific Synonyms

Scientific Name Author Year Status
Atherina microstoma Günther 1861 Synonym
Atherinichthys modesta Castelnau 1872 Synonym
Atherinosoma vorax Castelnau 1872 Synonym
Pranesella endorae Whitley 1934 Synonym

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 2 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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