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💧 Freshwater Least Concern 🌡️ Tropical

Pennyfish

Denariusa australis Steindachner, 1867
Max Length
4.5 cm
Max Weight
-
Lifespan
-
Trophic Level
3.3
Depth
-
Climate
Tropical
Resilience
High
Vulnerability
10.00/100
Typical Length
3.5 cm
Depth Zone
demersal

📖 Overview

Occurs in small, slow-flowing streams and swamps where there is dense aquatic vegetation . Tolerant of temperatures between 25° and 38°C, and a pH range of 4.5-8.1 . Feeds primarily on aquatic insects and micro-crustaceans . The smallest ambassid in Australia, with a life span of probably 2-3 years. Sexual maturity is attained at the end of the first year and breeding has been recorded in the wet season in flooded swampy lagoons .

Scientific Name
Denariusa australis
Authority
Steindachner, 1867
Habitat
Freshwater
Climate
Tropical
IUCN Status
LC
Max Length
4.5 cm
Trophic Level
3.3
Resilience
High
Vulnerability
10.00/100
Water Temp
22–32 °C
Salinity
0–0.5 ppt

🐟 Physical Description

Dorsal spines (total): 8; Dorsal soft rays (total): 9 - 10; Anal spines: 3; Anal soft rays: 7 - 9.

🌀 Behaviour

Behavioural data for Pennyfish is currently being reviewed.

🦐 Diet

aquatic invertebrates
small fish
algae
detritus

🥚 Reproduction

🐣 Oviparous
Spawning Season
spring
Spawn Location
Substrate
Fertilization
External

🌍 Habitat & Distribution

Freshwater; demersal. Tropical; 22°C - 32°C ; 6°S - 19°S

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Trophic Level
3.3±0.45
Food Items

aquatic insects and micro-crustaceans (Ref

📐 Morphometrics

Length–Weight Relationship: W = 0.01202 × L3.02 (TL)
Max TL
4.5cm
Dorsal Spines
8
Dorsal Rays
10
Anal Spines
3
Anal Rays
8

🌡️ Water Parameters & Tolerance

Temperature Range
22–32°C
Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
10.00/100
Low vulnerability
Trophic Level
3.3
Predator
Climate Zone
Tropical
Described By
Steindachner, 1867

🌐 Names & Taxonomy

Language Common Names
🇬🇧English Penny Fish
🌍CES okouníček queenslandský

🗺️ Global Occurrence Map

Occurrence records from the Global Biodiversity Information Facility (GBIF) - 4 records indexed .

Occurrence density from GBIF View GBIF records ↗

👥 Community & Contribute

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