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Bighead Carp

Bighead Carp

The bighead carp is a large, narrow fish with eyes that project downward. Coloration of the body is dark gray, fading to white toward the underside, and with dark blotches on the sides.

By May 20, 2016 Read More →
Silver Carp

Silver Carp

The silver carp is a deep-bodied fish that is laterally compressed. These large fish (up to 100 pounds) that breed very rapidly.

By May 20, 2016 Read More →
Northern Snakehead Fish

Northern Snakehead Fish

Distribution Early Detection

By May 20, 2016 Read More →
Rudd

Rudd

The rudd is a somewhat stocky, deep-bodied fish with a forked tail, and the mouth is distinct with a steeply angled protruding lower lip. Young rudd compete with native species for habitat and food, such as algae and small invertebrates.

By May 20, 2016 Read More →
Rusty Crayfish

Rusty Crayfish

Rusty crayfish have a dark brown body, distinguishable by dark, rusty spots on either side of carapace. They are an opportunistic feeder and a very aggressive species that often displace native crayfish.

By May 20, 2016 Read More →
Water Lettuce

Water Lettuce

Water lettuce is a free floating aquatic plant. It forms thick mats that block sunlight and slow or prevent the growth of native aquatic plants.

By May 19, 2016 Read More →
Water Hyacinth

Water Hyacinth

Water hyacinth is a free floating perennial aquatic plant. In climates where it is unable to survive the winter, water hyacinth will grow as an annual. Its leaves are round, curved, glossy bright green and float above the water’s surface of on bulbous stalks

By May 19, 2016 Read More →
Bloody Red Shrimp

Bloody Red Shrimp

The bloody red shrimp are translucent or ivory-yellow in color, and exhibits bright red to reddish-orange coloring around the head and tail. The threat to the Great Lakes is currently not well understood.

By March 4, 2016 Read More →
Flowering Rush

Flowering Rush

Flowering rush is a perennial aquatic herbaceous plant that grows 1-4’ high on an erect stem. The narrow, pointed leaves are triangular in cross section and have smooth edges and parallel veins.

By December 12, 2014 Read More →
Starry Stonewort

Starry Stonewort

Distribution Common – Great Lakes

By October 22, 2014 Read More →
Alewife

Alewife

Alewife is a species of ocean herring with a bluish-grey to olive back with silvery sides. The body is wide, narrows at the belly, and averages 6” in length. They have large eyes, a prominent black spot near the gill cover, and a forked fin.

By February 11, 2014 Read More →
Round Goby

Round Goby

The round goby is a small, soft-bodied fish with a distinctive black spot on the first dorsal fin. They have large, protruding eyes and range in length from 4″ to 10″. While juveniles are grey, adult round gobies have grey, black, brown, and olive green markings.

By February 11, 2014 Read More →
Yellow Floating Heart

Yellow Floating Heart

Yellow floating heart is an herbaceous perennial that has stout, branching stems. The heart-shaped, almost circular, leaves are usually oppositely arranged and frequently purplish underneath. Bright yellow flowers have five petals and distinctively fringed edges. It spreads both vegetatively and by seeds.

By February 10, 2014 Read More →
Variable-leaf Watermilfoil

Variable-leaf Watermilfoil

Variable-leaf watermilfoil is a submerged perennial that looks like many native plants, including native milfoil species. It has 4-6 feathery leaves whorled around the stem, but some leaves can be alternating. Leaves are divided into 7-14 pairs of leaflets. Dense leaf arrangement gives this plant a bottle brush appearance. Stems are thick and reddish-brown. In mid to late summer, blade-like, serrated leaves with small, reddish pink flowers form an erect spike that emerges from the water.

By January 30, 2014 Read More →
Quagga Mussel

Quagga Mussel

Quagga mussels are filter-feeding freshwater bivalve mollusks. The quagga mussel is pale toward the end of the hinge and about 3/4″ wide.

By January 6, 2014 Read More →