Spiny Waterfleas

How to identify them

  • You need a microscope to identify them properly
  • They have a single dark eye
  • Have 4 pairs of legs
  • Grows up to 1.5 cm (tail is 60% of the length)
  • Balloon-like egg pouch

Why it's bad

  • Eats lots of zooplankton, which reduces food for small fish
  • Can multiply very quickly
  • Reduces native population of zooplankton
  • Can affect fishing, such as catching on fishing equipment, making it difficult to reel in lines and clogging nets
Spiny Waterfleas