What this screen does

About half of anglers do not go “to a lake” — they go “after walleye”. For them the way into the product is the fish: pick the species, see when it feeds, and find which of our waters hold it. From there the path is the same as everywhere else — the water's page, a ramp, a route. The twelve bars under every fish are its feeding calendar, and the current month is marked so you can see at a glance whether it is worth going now.

The data behind it

The species dictionary is ours: 98 fish with our own renders, drawn the way a field guide draws them — side on, right proportions, right colouring. Nobody else has these images. The feeding calendars and temperature windows come from state wildlife agencies and fisheries literature, and they are shifted by latitude: the same species peaks about six weeks earlier in Florida than in Michigan, and one national curve would be wrong half the year.

What it calls

GET /api/fishing/fish?lat= — the dictionary with the calendar shifted for your latitude · GET /api/fishing/fish/:id — one species and the waters that hold it

What you can do here

• Filter down to what is feeding this month
• Tap a fish to see its size, lifespan and habits
• Read the feeding calendar for your own latitude
• See every one of our waters that holds it
• Jump straight from the species to a water and a ramp