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💧 Freshwater Endangered 🌡️ Temperate

Shannon galaxias

Paragalaxias dissimilis Regan, 1906
Max Length
7.5 cm
Max Weight
-
Lifespan
3 yrs
Trophic Level
3.2
Depth
-
Climate
Temperate
Resilience
Low
Vulnerability
15.00/100
Typical Length
5.5 cm
Depth Zone
demersal

📖 Overview

Facultative air-breathing in the genus ; Live in the margins of lakes and streams, usually in rocky areas or around vegetation and debris. Bottom-dweller in shallows of lakes and inlet streams over rocky substrates. Often sheltering in crevices under rocks, woody debris or among aquatic plants. May also occur in deeper lacustrine waters. A nocturnally active, seldom seen species. Breed in summer (December-January), releasing demersal eggs among rocks at lake margins which hatch in two weeks. Juveniles swim in midwater feeding on plankton, and colonise the bottom after about six months. Sexual maturity is attained at the end of the first year; the maximum life span is probably about three years . Feed on insects, small crustaceans, algae and eggs of other galaxiids.

Scientific Name
Paragalaxias dissimilis
Authority
Regan, 1906
Habitat
Freshwater
Climate
Temperate
IUCN Status
EN
Max Length
7.5 cm
Lifespan
3 years
Trophic Level
3.2
Resilience
Low
Vulnerability
15.00/100
Salinity
0–0.5 ppt

🔬 Taxonomy

Genus
Paragalaxias
Paragalaxias
Species
Shannon galaxias
Paragalaxias dissimilis

🐟 Physical Description

Physical description for Shannon galaxias is currently being compiled.

🌀 Behaviour

Behavioural data for Shannon galaxias 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. Temperate Central Plateau of Tasmania, Australia.

🌿 Ecology

Zone Preferences
💧 Freshwater ⬇️ Benthic
Trophic Level
3.2±0.4
Food Items

insects, small crustaceans, algae and eggs of other galaxiids

📐 Morphometrics

Length–Weight Relationship: W = 0.0049 × L3.12 (TL)
Max TL
7.5cm

🌡️ Water Parameters & Tolerance

Salinity Range
0–0.5ppt

🛡️ Conservation Assessment

IUCN Category
Endangered
Assessment Date
2019

📊 Population Risk & Fisheries

Population Resilience
Low
Minimum doubling time
Fishing Vulnerability
15.00/100
Low vulnerability
Trophic Level
3.2
Predator
Climate Zone
Temperate
Described By
Regan, 1906

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