Non-Native Animal Species Invasiveness Assessments

In 2013, the Department of Environmental Conservation, and consultants with Adirondack Research, Inc., utilized three modified versions of the plant assessment protocol to assess the invasive nature of non-native animal species. This work was conducted in preparation for the development of invasive species regulations on behalf of the New York State Invasive Species Council, in consultation with the Invasive Species Advisory Committee.

As with the plant assessment protocol, consequences to the native species and natural ecosystems of New York are the focus of the animal ranking system. The ranking system is designed to be repeatable, based on the best available science, clearly explained, and fully documented. The system can be used to assess non-native animal species that are established in New York State, species that are new arrivals, as well as species that are not yet present.

Species are assessed at a statewide level using one of three separate assessment forms, Terrestrial Vertebrate, Terrestrial Invertebrate, or Fish and Aquatic Invertebrate. In all three cases, questions are organized into four broad categories:

  1. ecological impact
  2. biological characteristic and dispersal ability
  3. ecological amplitude and distribution
  4. difficulty of control

To date, a total of 83 animal species were assessed in 2013. As additional assessment forms are completed, they will be posted on this website.

Background information pertaining to the assessment process and the use of these animal assessments in the development of official regulations and lists of prohibited and regulated species can be found in the report titled "A Regulatory System for Non-Native Species" prepared by the New York Invasive Species Council in June 2010.

The NYS Department of Environmental Conservation has published draft invasive species regulations for public comment. The associated documents are available on the Department's Lands and Forests Emergency, Proposed & Recently Adopted Regulations web page at:

New York State Animal Species Assessments

Scientific Name Common Name Taxonomic Grouping Ecological Rank Score NYS Profile Map

Agrilus planipennis

Emerald Ash Borer terrestrial invertebrates VH 96 NYS PDF    

Bellamya chinensis (Cipangopaludina chinensis)

Chinese Mystery Snail aquatic invertebrates VH 83 NYS PDF    

Bythotrephes cederstroemi (B. longimanus)

Spiny Water Flea aquatic invertebrates VH 82.42 NYS PDF    

Carassius auratus

Goldfish fish VH 81.63 NYS PDF    

Cercopagis pengoi

Fishhook Water Flea aquatic invertebrates VH 84.04 NYS PDF    

Cyprinus carpio

Common Carp fish VH 90.43 NYS PDF    

Dreissena  rostriformis bugensis

Quagga Mussel aquatic invertebrates VH 88 NYS PDF    

Dreissena polymorpha

Zebra Mussel aquatic invertebrates VH 83 NYS PDF    

Gambusia affinis

Western Mosquitofish fish VH 80.43 NYS PDF    

Gambusia holbrooki

Eastern Mosquitofish fish VH 81.72 NYS PDF    

Geomyces destructans

White-nosed Syndrome algae and cyanobacteria VH 82.22 NYS PDF    

Hemigrapsus sanguineus

Asian Shore Crab aquatic invertebrates VH 88.75 NYS PDF    

Misgurnus anguillicaudatus

Oriental Weatherfish fish VH 80.25 NYS PDF    

Myocastor coypus

Nutria terrestrial and aquatic vertebrates VH 81 NYS PDF    

Sus scrofa (excluding Sus scrofa domestica)

Eurasian Boar terrestrial and aquatic vertebrates VH 82 NYS PDF    

Archachatina marginata

Margis, Giant West African Snail aquatic invertebrates Unk 15.15 NYS PDF    

Piaractus brachypomus

Red-bellied Pacu fish Unk 18 NYS PDF    

Tilapia buttikoferi

Zebra Tilapia fish Unk 20.93 NYS PDF    

Alopochen aegyptiacus

Egyptian Goose terrestrial and aquatic vertebrates M 52 NYS PDF    

Alosa pseudoharengus

Alewife fish M 56.7 NYS PDF    

Apis mellifera scutellata x A. m ligustica, A. m iberiensis

Africanized Honey Bee terrestrial invertebrates M 56 NYS PDF    

Bellamya japonica (Cipangopaludina japonica)

Japanese Mystery Snail aquatic invertebrates M 62.5 NYS PDF    

Cairina moschata

Muscovy Duck terrestrial and aquatic vertebrates M 59 NYS PDF    

Carcinus maenas

Green Crab aquatic invertebrates M 63 NYS PDF    

Channa marulius

Bullseye Snakehead fish M 57 NYS PDF    

Clarias batrachus

Walking Catfish fish M 51.25 NYS PDF    

Ctenopharyngodon idella

Grass Carp fish M 68.82 NYS PDF    

Cyprinella lutrensis

Red Shiner fish M 56 NYS PDF    

Daphnia lumholtzi

Water Flea aquatic invertebrates M 54 NYS PDF    

Didemnum vexillum

Carpet Tunicate algae and cyanobacteria M 68.89 NYS PDF    

Eriocheir sinensis

Chinese Mitten Crab aquatic invertebrates M 62 NYS PDF    

Geosmithia morbida, Pityophthorus juglandis

Thousand Canker Disease, Walnut Twig Beetle algae and cyanobacteria M 66 NYS PDF    

Gymnocephalus cernuus

Ruffe fish M 59.57 NYS PDF    

Hemigrapsus penicillatus

Grapsid Crab aquatic invertebrates M 50.54 NYS PDF    

Hypophthalmichthys harmandi

Largescale Silver Carp fish M 63 NYS PDF    

Hypophthalmichthys nobilis

Bighead Carp fish M 62 NYS PDF    

Monopterus albus

Asian Swamp Eel fish M 53 NYS PDF    

Myiopsitta monachus

Monk Parakeet terrestrial and aquatic vertebrates M 53 NYS PDF    

Mylopharyngodon piceus

Black Carp fish M 56 NYS PDF    

Nyctereutes procyonoides

Asian Racoon Dog terrestrial and aquatic vertebrates M 57 NYS PDF    

Oncorhynchus mykiss

Rainbow Trout fish M 68 NYS PDF    

Oncorhynchus tshawytsha

Chinook Salmon fish M 52 NYS PDF    

Oreochromis aureus

Blue Tilapia fish M 58 NYS PDF    

Oreochromis niloticus

Nile Tilapia fish M 57 NYS PDF    

Oryctolagus cuniculus

European Rabbit terrestrial and aquatic vertebrates M 59 NYS PDF    

Petromyzon marinus

Sea Lamprey fish M 66.67 NYS PDF    

Phasianus colchicus, P. colchicus strachi

Ring-necked Pheasant, Sichuan Pheasant terrestrial and aquatic vertebrates M 51 NYS PDF    

Phytophthora ramorum

Sudden Oak Death algae and cyanobacteria M 54 NYS PDF    

Proterorhinus semilunaris (P.marmoratus)

Tubenose Goby fish M 54.55 NYS PDF    

Pterois miles, P. volitans

Common Lionfish, Red Lionfish fish M 64 NYS PDF    

Salmo trutta

Brown Trout fish M 60 NYS PDF    

Sander lucioperca (Stizostedion lucioperca)

Zander fish M 60 NYS PDF    

Scardinius erythrophthalmus

Rudd fish M 54 NYS PDF    

Styela plicata

Asian Sea Squirt aquatic invertebrates M 65 NYS PDF    

Trachemys scripta elegans

Red-eared Slider terrestrial and aquatic vertebrates M 60 NYS PDF    

Xenopus laevis

African Clawed Frog terrestrial and aquatic vertebrates M 55 NYS PDF    

Achatina fulica

Giant African Land Snail aquatic invertebrates L 40 NYS PDF    

Channa micropeltes

Giant Snakehead fish L 45 NYS PDF    

Lepus europaeus

European Hare terrestrial and aquatic vertebrates L 45 NYS PDF    

Monochamus alternatus

Japanese Pine Sawyer terrestrial invertebrates L 48 NYS PDF    

Oncorhynchus kisutch

Coho Salmon fish L 46 NYS PDF    

Tachypleus gigas, T. tridentatus, Carcinoscorpius rotundicauda

Asian Horseshoe Crabs aquatic invertebrates L 43.28 NYS PDF    

Achatina achatina

Giant Ghana Snail, Giant Tiger Land Snail aquatic invertebrates Insig. 31.25 NYS PDF    

Ictalurus furcatus

Blue Catfish fish Insig. 38 NYS PDF    

Podarcis sicula

Italian Wall Lizard, Istanbul Lizard terrestrial and aquatic vertebrates Insig. 29 NYS PDF    

Adelges tsugae

Hemlock Woolly Adelgid terrestrial invertebrates H 76    

Amynthas spp.

Asian Earthworms terrestrial invertebrates H 71 NYS PDF    

Anoplophora glabripennis

Asian Longhorned Beetle terrestrial invertebrates H 72 NYS PDF    

Bithynia tentaculata

Faucet Snail aquatic invertebrates H 71.28 NYS PDF    

Channa argus

Northern Snakehead fish H 77 NYS PDF    

Corbicula fluminea

Asian Clam aquatic invertebrates H 73.68 NYS PDF    

Crassostrea ariakensis

Suminoe Oyster aquatic invertebrates H 76.25 NYS PDF    

Cryptococcus fagisuga

Beech Scale terrestrial invertebrates H 80 NYS PDF    

Cygnus olor

Mute Swan terrestrial and aquatic vertebrates H 76 NYS PDF    

Hemimysis anomala

Bloody Red Shrimp aquatic invertebrates H 70.23 NYS PDF    

Hypophthalmichthys molitrix

Silver Carp fish H 79 NYS PDF    

Lymantria dispar

Asian & European Gypsy Moth terrestrial invertebrates H 73 NYS PDF    

Neogobius melanostomus

Round Goby fish H 78.57 NYS PDF    

Orconectes rusticus

Rusty CrayFish aquatic invertebrates H 78 NYS PDF    

Potamopyrgus antipodarum

New Zealand Mud Snail aquatic invertebrates H 79 NYS PDF    

Rapana venosa

Veined Rapa Whelk aquatic invertebrates H 72 NYS PDF    

Sirex noctilio; Amylostereum areolatum

Sirex Woodwasp; Symbiotic Fungus algae and cyanobacteria H 75 NYS PDF    

Tinca tinca

Tench fish H 77 NYS PDF