The best encyclopedia fish apps on iPhone average 4.5★ across 213+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.
A comprehensive fish encyclopedia and fishing guide in 50 languages. Discover detailed information on 800 fish species, including their habitats, feeding habits, and optimal fishing conditions. Includes helpful tools like a fisherman's calendar and knot guides.
This app serves as a mobile encyclopedia for tying fishing knots. It provides detailed, illustrated, step-by-step guides for various knots, including their properties, strength reduction, and recommended line types. The app works offline and categorizes knots for easy access.
Instantly identify fish species by taking or uploading a photo. Access a vast database with detailed information and helpful tips for fish keeping. Connect with a community for shared knowledge and insights.