Silver Carp
Silver Carp (Hypophthalmichthys molitrix) is a freshwater species. The first thing to check: a keel running along the belly the whole way from the throat to the vent — the definitive separation from a bighead carp. The look-alike to rule out is Bighead Carp: a bighead's belly keel runs only from the pelvic fins back, not all the way to the throat, and its flanks carry irregular dark blotches.
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| Scientific name | Hypophthalmichthys molitrix |
|---|---|
| Also called | jumping carp, flying carp, Asian carp |
| Water | Freshwater |
| Group | Carp |
| Temperature | Active from the 60s through the 80s °F. |
How to identify a Silver Carp
- A keel running along the belly the whole way from the throat to the vent — the definitive separation from a bighead carp.
- Plain bright silver flanks with no dark mottling, and eyes set low on the head, below the level of the mouth.
- No barbels and no scales on the head, with very fine scales on the body.
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 |
|---|---|
| Bighead Carp | A bighead's belly keel runs only from the pelvic fins back, not all the way to the throat, and its flanks carry irregular dark blotches. |
| Common Carp | Common carp have two pairs of barbels, large scales and a long serrated dorsal fin; silver carp have none of these. |
Side-by-side comparisons
Read the full entry for Bighead Carp and Common Carp.
Where it lives
An invasive species established through the Mississippi, Missouri, Ohio and Illinois river systems and spreading. Filter-feeds in open river channels and backwaters.
Temperature
Active from the 60s through the 80s °F.
The conditions that matter
Silver carp filter plankton, so their distribution follows chlorophyll rather than structure or bait. They are the species that leaps from the water at boat noise, and in most states it is illegal to return a live one or transport it — so a timestamped, GPS-stamped record of a capture in new water is genuinely valuable to the agencies tracking the invasion front.
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 silver carp 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.