Skip to content

Lepidurus arcticus

Warning: explode() expects parameter 2 to be string, array given in /home/customer/www/ on line 86

Warning: array_intersect(): Expected parameter 1 to be an array, null given in /home/customer/www/ on line 86
Lepidurus arcticus

L. arcticus is one of the most unique of the triops. Not only does it inhabit permanent fresh bodies of water, it is even known to coexist with arctic charr in some deep Norwegian, Greenland and Svalbard lakes. As a rule, though, it lives in high arctic lakes shallower than 6 meters – the lakes freeze completely during the colder seasons and this keeps fish from living there.  Scientists are actively studying the trophic relation between L. arcticus and the arctic charr in those lakes they coexist in to understand the delicate ecology better.

Major species

Lepidurus arcticus




  • Asia (Northern)
    • Kuril Archipelago
    • Russia
  • Europe (Northern)
    • Norway
    • Greenland
    • Svalbard


Cold temporary freshwater pools but is also found in streams and lakes where conditions allow

Temperature range

Minimum 4-7°C

Body ring/segments

26 – 28; 4 – 5 apodous


41 – 46

Notable characters

The endites of the 1st thoracic appendage barely reach edge of the carapace, supra anal plate very small relative to other Lepidurus, second maxilla present


Bisexual (female biased) and hermaphroditic

My Triops (April 24, 2024) Lepidurus arcticus. Retrieved from
"Lepidurus arcticus." My Triops - April 24, 2024,
My Triops July 10, 2020 Lepidurus arcticus., viewed April 24, 2024,<>
My Triops - Lepidurus arcticus. [Internet]. [Accessed April 24, 2024]. Available from:
"Lepidurus arcticus." My Triops - Accessed April 24, 2024.
"Lepidurus arcticus." My Triops [Online]. Available: [Accessed: April 24, 2024]
Siam Live Aquarium Hatch Your own Prehistoric Pets 200 TRIOPS Eggs Alive T.LONGICAUDATUS Living Fossil from The Age of Dinosaurs
  • {Living fossil} - Fossil have been found and back to more than 220 million years ago. They are thougt to have been on the planet even longer than that, up to 350 million years
  • {Just add water} for watch the prehistoric sea creature egg hatch and come to life
  • { Make your own ancient environment }
  • {Learn fun facts} from seeing the life cycle of your ancient pets
  • { 1 set include } 50 triops eggs in capsule and get free bubble air stone
As an Amazon Associate I earn from qualifying purchases.
5 1 vote
Article Rating
Notify of

Inline Feedbacks
View all comments
Would love your thoughts, please comment.x