Yellow Perch
Yellow Perch (Perca flavescens) is a freshwater species. The first thing to check: six to eight bold dark vertical bars over a brassy yellow-gold flank. The look-alike to rule out is Walleye: walleye are far larger and more elongate, olive rather than yellow, with a glassy reflective eye and canine teeth. Small walleye show mottling, not clean bars.
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| Scientific name | Perca flavescens |
|---|---|
| Also called | ringed perch, lake perch, jack perch |
| Water | Freshwater |
| Group | Perch |
| Temperature | Most active between 60 and 70 °F, and a mainstay of hard-water fishing well below that. |
How to identify a Yellow Perch
- Six to eight bold dark vertical bars over a brassy yellow-gold flank.
- Orange to bright red pelvic and anal fins, most vivid on spawning males.
- Two clearly separate dorsal fins, the front one spiny.
If you would rather not work through a key on a wet deck, photograph the fish and let the app name it — you get the common and the scientific name back, and the record is filed before you release.
Fish it is mistaken for
| Species | How to tell them apart |
|---|---|
| Walleye | Walleye are far larger and more elongate, olive rather than yellow, with a glassy reflective eye and canine teeth. Small walleye show mottling, not clean bars. |
| White Perch | White perch are silver with faint horizontal lines, no bold vertical bars, and are not a true perch at all. |
Read the full entry for Walleye and White Perch.
Where it lives
Northern lakes, reservoirs and slow rivers across the northern United States and Canada, and stocked well south of the native range. Schools over sand, gravel and weed edges.
Temperature
Most active between 60 and 70 °F, and a mainstay of hard-water fishing well below that.
The conditions that matter
Perch are a daylight, schooling, bottom-oriented fish — the bite tracks light level closely and shuts down at dark. Water temperature drives the spring shallow move; wind and the resulting turbidity on a shoreline often make or break a day.
Global Fishing League records 18 weather and water readings against every catch automatically — tide stage, barometric pressure, water temperature, salinity, dissolved oxygen, chlorophyll, swell, current, moon phase and more, taken at your GPS position at the moment you log the fish. Over a season that turns a hunch about yellow perch into a pattern you can read.
See every reading recorded with a catch, or the guides to what each reading means.
Size limits, bag limits and seasons
Size limits, bag limits, slot limits and seasons are set by your state wildlife agency — and for many offshore and migratory species by federal regulators — and on many waters they differ from the statewide rule. They also change between seasons. Check the current regulations for the exact water you are fishing before you keep a fish — we do not republish limits here, because a number that is a season out of date is worse than no number.
What the app does do is make your side of it accurate: every catch carries a length measured from the photograph, a GPS position and a timestamp, exportable if you ever need to show your work for a tournament or a record claim. It is also what a Global Fishing League entry is built from — a record that verifies itself, without publishing where you caught the fish.