Freshwater Invertebrate
We have broken them down by species grouping that they would appear within, followed up by the first letter of their common name sorted alphabetically (A -> Z). If you are unsure of what you are specifically looking for (only know the appearance, for example) please create a new thread in the Freshwater Invertebrate forum so the community can help you.
Otherwise, feel free to use the Search feature to get the correct page dependent on the number of articles we have listed below (if a letter isn't listed, there are no current articles regarding it).