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The Maryland darter (Etheostoma sellare) is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is considered one of the rarest freshwater fish species in the world, due in part to its incredibly limited geographic range ...
Greater siren out of water. Greater sirens are carnivorous and prey upon invertebrates (such as insects, crustaceans, gastropods, bivalves, spiders, molluscs, and crayfish) [11] and aquatic vertebrates (such as small fish) [11] with a possible preference for molluscs (such as snails and freshwater clams), [8] [12] although they have been observed to eat vegetation such as algae.
Aquatic insects live mostly in freshwater habitats, and there are very few marine insect species. [9] The only true examples of pelagic insects are the sea skaters , which belongs to the order Hemiptera, and there are a few types of insects that live in the intertidal zone , including larvae of caddisflies from the family Chathamiidae , [ 10 ...
Necturus maculosus specimens live in streams, lakes, and ponds in the eastern part of North America. [4] They appear in the southern section of Canada, as far south as Georgia, and from the Midwest United States to North Carolina. Behaviorally, they hide under cover such as rocks and logs during the day and become more active at night. [7]
The construction of dams blocked free flowing rivers like the Mississippi in which they live, disrupting their spawning migration routes. Shorthead redhorse are killed easily by pollutants in the water. "The upstream migratory range of shorthead redhorse in a Maryland river decreased due to an increase in chlorinated sewage outfalls". [8]
Belostoma flumineum are commonly found in wetlands, marshes and ponds throughout North America. They live among weeds and like ponds with muddy bottoms which are good for over wintering in. [2] Common species that B. flumineum prey upon are backswimmers, water boatmen, dragonfly nymphs, and snails. [4]
The common orders of insects that are found in river ecosystems include Ephemeroptera (also known as a mayfly), Trichoptera (also known as a caddisfly), Plecoptera (also known as a stonefly, Diptera (also known as a true fly), some types of Coleoptera (also known as a beetle), Odonata (the group that includes the dragonfly and the damselfly ...
The Jug Bay Wetlands Sanctuary is located along the tidal Patuxent River in southern Maryland, United States. It was established in 1985 and is operated by the Anne Arundel County Department of Recreation and Parks. It includes more than 1,700 acres (6.9 km 2) of tidal freshwater wetlands, forests, meadows and fields.