How many carp species are there in North America?

Five that matter to an angler: common carp, plus the four species USGS groups as invasive carp — bighead, black, grass and silver. Mirror carp and leather carp are not separate species; they are scale varieties of common carp, and the US Fish Commission distributed both in the late 1800s.

Is a mirror carp a different species from a common carp?

No. Mirror and leather carp are varieties of common carp, Cyprinus carpio, differing in scale pattern rather than species. A mirror carries a scattering of large irregular scales; a leather is nearly scaleless. Both are the same fish as a fully scaled common carp.

Is the common carp native to the United States?

No. Common carp were brought from France to Orange County, New York in 1831 and 1832, reached the Chesapeake Bay region in 1877, and were then propagated and distributed by the US Fish Commission. They are now recorded in every state except Alaska. The carp most Americans fish for is itself an introduced species.

Do silver carp really jump into boats?

Yes, and USGS documents it. Silver carp will jump as much as 10 feet into the air in response to rocks thrown in the water, passing trains, and geese taking off. They also jump at the sound of outboard motors, often landing in boats and sometimes striking the passengers. It is a genuine injury risk, not an internet exaggeration.

Can you move carp between waters?

No. Transporting live carp is restricted or prohibited in most states, and moving any live fish between waters is how invasions start. The same rule that governs live bait applies here, and it is one of the few fishing rules that carries serious penalties.

Carp Species in North America

Five carp matter to a US angler, and two of the names people use are not species at all. Mirror and leather are varieties of common carp. The four genuinely separate invaders are bighead, silver, grass and black — and USGS no longer calls them Asian carp, for reasons it has published.

Published September 5, 2026

Five carp matter to a US angler — and two of the names people use are not species at all.

Common carp — one species, several scale varieties, including mirror and leather
Invasive carp — four genuinely separate species: bighead, black, grass and silver

Sorting those out settles most of the confusion, and the second group is now a federal management problem rather than a curiosity.

The five, at a glance

Name	Species?	What it is
Common carp	Cyprinus carpio	The carp most anglers target. Introduced, not native.
Mirror carp	✗ variety	Common carp with scattered large irregular scales
Leather carp	✗ variety	Common carp, essentially scaleless
Bighead carp	Hypophthalmichthys nobilis	Invasive. Filter feeder.
Silver carp	H. molitrix	Invasive. The one that jumps.
Grass carp	Ctenopharyngodon idella	Invasive. Eats vegetation.
Black carp	Mylopharyngodon piceus	Invasive. Eats snails and mussels.

Mirror and leather are not species

This is the most common mix-up and the easiest to settle.

Mirror carp and leather carp are Cyprinus carpio — the same fish as a fully scaled common carp. They differ in scale pattern, not in species. A mirror carries a scattering of large, irregular, reflective scales; a leather has almost none.

They are not accidents either. USGS records that the US Fish Commission distributed both mirror carp and leather carp varieties in the late 1800s — the varieties were deliberately spread as food fish.

The common carp is not native, and the government spread it

Worth knowing before anyone calls carp a trash fish or a foreign invader in the same breath.

Common carp were brought to the United States from France by Henry Robinson of Orange County, New York, in 1831 and 1832. They reached the Chesapeake Bay region in 1877, were then propagated and distributed through the Upper Mississippi River System, and USGS now records them in every state except Alaska.

So the carp most Americans fish for is an introduced species that a federal commission actively distributed, while a different set of carp is now the target of a federal effort to stop their spread. Both things are true.

The four invasive carp

USGS's account is specific. These four were imported in the 1970s to control nuisance algal blooms in wastewater treatment plants and aquaculture ponds, and for human food.

Within ten years, the carp escaped confinement and spread to the waters of the Mississippi River basin and other large rivers like the Missouri and Illinois.

The problem is competition. USGS: invasive carp "are in direct competition with native aquatic species for food and habitat," and "their rapid population increase is disrupting the ecology and food web of the large rivers of the Midwest." Where they are abundant they have "harmed native fish communities and interfered with commercial and recreational fishing."

The Great Lakes are the line being defended. USGS frames the stake plainly: if invasive carp reach them, they would negatively affect a $7 billion-a-year fishing industry.

Silver carp, and why it is a safety issue

The jumping is real and USGS documents it:

Silver carp will jump as much as 10 feet into the air in response to rocks thrown in the water, passing trains, geese taking off from the water.

And the part that matters if you run a boat:

They also jump at the sound of outboard motors, often landing in boats and sometimes striking the passengers.

A ten-pound fish arriving at head height at speed is a genuine injury, and people have been hurt. On stretches of the Illinois and Mississippi where silver carp are dense, this is a boating hazard rather than a novelty.

"Asian carp" is no longer the term — and the reason is published

USGS now uses invasive carp. This is not cosmetic and the agency has set out its reasoning: the "Asian carp" category

fails to acknowledge the cultural value and the ecological differences of these fishes, causes confusion when translated into Chinese, and frequently causes problems of communication with the public and occasionally among professionals.

The ecological point is the practical one. The four fish do completely different jobs — bighead and silver filter plankton, grass carp eat vegetation, black carp eat snails and mussels — so a single label hides the fact that they cause different problems and need different responses.

If you read an older article using the old term, that is usually a sign of its age rather than an error at the time.

What this means for you on the bank

Common carp are a legitimate sport fish and a good one — large, strong, widely available, and taken on bait or fly. Our common carp species page covers identification, diet and spawning.

Do not move live carp anywhere. Transporting live fish between waters is restricted or prohibited in most states, and it is how every one of these invasions began. The same principle governs live bait — see fishing bait explained, where US Fish and Wildlife asks anglers not to release non-native bait alive.

If you catch an invasive carp, do not put it back into a different water and do not transport it live. Report unusual catches to your state agency — invasive carp distribution is actively monitored, and an angler's report of a fish outside its known range is genuinely useful data.

And check your own state's rules. Grass carp in particular are stocked legally in some states under permit for weed control, usually in a sterile triploid form, while being prohibited in others. That is a state-by-state matter and the agency is the authority.

Common carp — identification, range, diet and spawning
Fishing bait explained — why live bait must not move between waters
Fishing terms glossary — the vocabulary, plainly

Sources

What are Invasive Carp? — U.S. Geological Survey — the four species; import in the 1970s for algal control in wastewater treatment plants and aquaculture ponds and for human food; escape within ten years into the Mississippi basin, Missouri and Illinois; direct competition with native species and disruption of Midwest river food webs; the $7 billion-a-year Great Lakes fishing industry at stake; and the silver carp jumping behaviour including landing in boats and striking passengers.
"Asian carp" is societally and scientifically problematic. Let's replace it — USGS publication — the stated reasoning for moving to "invasive carp": failure to acknowledge cultural value and ecological differences, confusion in translation to Chinese, and communication problems with the public and among professionals.
Common Carp (Cyprinus carpio) Species Profile — USGS Nonindigenous Aquatic Species — introduction from France to Orange County, New York in 1831 and 1832; the Chesapeake Bay region in 1877; US Fish Commission distribution of mirror and leather carp varieties in the late 1800s; and records in all states except Alaska.

Frequently asked questions

How many carp species are there in North America?: Five that matter to an angler: common carp, plus the four species USGS groups as invasive carp — bighead, black, grass and silver. Mirror carp and leather carp are not separate species; they are scale varieties of common carp, and the US Fish Commission distributed both in the late 1800s.
Is a mirror carp a different species from a common carp?: No. Mirror and leather carp are varieties of common carp, Cyprinus carpio, differing in scale pattern rather than species. A mirror carries a scattering of large irregular scales; a leather is nearly scaleless. Both are the same fish as a fully scaled common carp.
What are invasive carp?: Four species — bighead, black, grass and silver carp — which USGS says were imported to the United States in the 1970s to control nuisance algal blooms in wastewater treatment plants and aquaculture ponds, and for human food. Within ten years they had escaped and spread into the Mississippi, Missouri and Illinois rivers.
Why is Asian carp no longer the correct term?: USGS now uses invasive carp. Its published reasoning is that the Asian carp category fails to acknowledge the cultural value and ecological differences of these fishes, causes confusion when translated into Chinese, and frequently causes problems of communication with the public and occasionally among professionals.
Is the common carp native to the United States?: No. Common carp were brought from France to Orange County, New York in 1831 and 1832, reached the Chesapeake Bay region in 1877, and were then propagated and distributed by the US Fish Commission. They are now recorded in every state except Alaska. The carp most Americans fish for is itself an introduced species.
Do silver carp really jump into boats?: Yes, and USGS documents it. Silver carp will jump as much as 10 feet into the air in response to rocks thrown in the water, passing trains, and geese taking off. They also jump at the sound of outboard motors, often landing in boats and sometimes striking the passengers. It is a genuine injury risk, not an internet exaggeration.
Can you move carp between waters?: No. Transporting live carp is restricted or prohibited in most states, and moving any live fish between waters is how invasions start. The same rule that governs live bait applies here, and it is one of the few fishing rules that carries serious penalties.