The Bioactive Builder

Ecosphere Species Explorer

An interactive guide to native aquatic flora and fauna by state and watershed

Click a state below to see its major watersheds. Hover a watershed for a quick preview of what lives there, or click it to see the full species list — with care info, enclosure requirements, difficulty, invasiveness, and whether each species is actually a good fit for a closed or semi-closed ecosphere.

Before you collect or keep anything wild-caught: invasiveness status and possession/collection laws vary by state and change over time. Species ID mistakes (especially with crayfish and apple snails) are a common way invasive species spread further. Always confirm current regulations with your state's wildlife agency before collecting from or releasing anything into a natural water body — this tool is educational, not legal advice.
Species data available Coming soon Not yet planned