If you want to improve what you are seeing in your feed make sure that you are following the things that interest you by going to your profile - tap on Settings wheel - Feed preferences.
From here you can set up your favorite fishing location and manage the anglers, locations, pages, brands, species and fishing methods that you are following.
Make sure you have allowed Fishbrain to use your current location in your phone settings for a more accurate feed.
The feed might show you species that you don’t follow, but you might be following the angler or the water where it was caught. Also, the feed might show you waters outside your area, but it might contain a species or an angler that you are following.