Fauna
Invertebrate

Shield Shrimp

Triops australiensis

Also known as Australian Tadpole Shrimp, Australian Shield Shrimp

Shield shrimp hatch rapidly from drought-resistant eggs when torrential rains fill dry claypans across arid inland Australia. Their horseshoe-shaped carapace shields delicate limbs as they plow through muddy bottom sediments in search of organic matter, algae, and small prey. Within a few short weeks, these ancient crustaceans reach maturity, reproduce, and lay durable cysts before their temporary pools evaporate completely.

FreshwaterCrustaceanAncient Lineage
Shield Shrimp reference1 / 2
(c) Sean Murray, some rights reserved (CC BY-SA) · cc-by-sa
—observations
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Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Key facts
Diet & preyDetritus, Algae, Microcrustaceans
Predators
  • Water birds
  • Predaceous diving beetles
  • Frogs
ThreatsHabitat alteration, prolonged severe drought, land degradation
HabitatsEphemeral freshwater pools, claypans, floodwaters
Life span1–3 months
Classification
  1. FamilyTriopsidae
  2. SpeciesTriops australiensis
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Harmless crustacean; safe to observe at a normal distance.
Responsible observation
  • Finding pools: Search shallow claypans and floodwaters in arid inland regions shortly after heavy rains.
  • Close inspection: Use a clear container filled with pool water to examine their underside legs and swimming motion.
Related species
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