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Invasive Species: Stone Moroko

Stone Moroko

(Pseudorasbora parva)
*Not detected in Michigan*

Prohibited in Michigan

Report this species:

Use the Midwest Invasive Species Information Network (MISIN) online reporting tool.

- Or - download the MISIN smartphone app and report from your phone -



  • Yellowish-green to silver body color.
  • Approximately 8 cm long.
  • Superior and transverse mouth.
  • Pale yellow fins, dorsal fin has darker stripe.
  • Young individuals have a dark stripe along the side.

stone moroko
Photo courtesy of Seotaro.

Habitat: Prefer well vegetated ponds, small lakes, and small channels.

Diet: Small insects, plant material, fish, fish eggs, and planktonic crustaceans.

Native Range: East Asia.

Local Concern: Stone moroko compete with farmed fish species for food, consume native juvenile fishes, act as a vector for infectious fish diseases, and contribute to eutrophic conditions.

Potential Means of Introduction: Aquaculture release.


Stone Moroko Invasive Species Alert (printable PDF)