onWater Fish has over 100 species layers which you can use to understand ranges and presence. This data is sourced from the scientific community (rather than users' catch logs) and consolidated by the onWater team to help you plan trips and catch new species far from home or in your backyard.
To use the Fish Species Filters, head to the map tab and tap to open the Fish Species Filters Menu:
Search for and select a species:
After you select a species, you'll see solid and dotted lines green which represent verified and unverified species presence in those waterbodies:

