Welcome to Rhithron.
Rhithron specializes in freshwater bioassessment services.
What we do:
Taxonomic identification of



  • benthic macroinvertebrates
  • periphyton, including diatoms (freshwater and marine) and non-diatom algae
  • zooplankton and phytoplankton (freshwater and marine)
Data analysis and interpretation



  • narrative ecological interpretations of invertebrate and periphyton data
  • study design for biological assessment
  • statistical data analysis

We invite you to learn more about Rhithron...