Colorado’s Top Invasive Concerns
Aquatic Nuisance Species (ANS)Aquatic Nuisance Species are aquatic plants and animals
that invade lakes, reservoirs, rivers and streams. Examples of ANS
are the zebra mussel, quagga mussel, New Zealand mudsnail, Asian
carp or Eurasian watermilfoil. ANS can also include fish pathogens
and diseases, such as viral hemorrhagic septicemia (VHS) or
whirling disease. >> Learn more.