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Bighead Carp

Bighead Carp

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

By May 20, 2016 Read More →
Silver Carp

Silver Carp

Silver carp are deep-bodied fish that are laterally compressed. These large fish, which can reach up to 100 lbs., can breed very rapidly.

By May 20, 2016 Read More →
Northern Snakehead Fish

Northern Snakehead Fish

Northern snakehead fish have long, narrow bodies with long dorsal and anal fins. They have a large mouth and protruding jaw with canine-like teeth. The fish get their name from the enlarged scales, shape and irregular, blotchy coloration on their head that give a snake-like appearance. Snakehead fish may vary size depending on their age and location, but can grow up to 4 ft. in length.

By May 20, 2016 Read More →
Rudd

Rudd

The rudd is a somewhat stocky, deep-bodied fish with a forked tail. 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

The rusty crayfish has a dark brown body, distinguishable by dark, rusty spots on either side of the carapace. Rusty crayfish are opportunistic feeders. They are 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 on bulbous stalks.

By May 19, 2016 Read More →
Bloody Red Shrimp

Bloody Red Shrimp

The bloody red shrimp are translucent ivory-yellow in color, and exhibit 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, herbaceous, aquatic plant that grows 1-4 ft. tall, 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

Starry stonewort looks like a rooted plant, but is actually an algae related to the native Chara. It can form dense mats on the lake bottom, and has long, uneven-length, gelatinous branches that look angular at each joint. It may also have one cream colored bulb at the base of each branch cluster.

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 its first dorsal fin. It has large, protruding eyes and its body ranges from 4-10″ in length. 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 5 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 watermilfoil species. It has 4-6 feathery leaves whorled around the stem, but some leaves can be alternate. Its leaves are divided into 7-14 pairs of leaflets, the 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

The quagga mussel is a filter-feeding, freshwater, bivalve mollusk. It is pale toward the end of its hinge and about 3/4″ wide.

By January 6, 2014 Read More →