The zebra mussel are only found in places by or near a fresh water source.
The zebra mussel is native to Europe but was first found in America in 1988 (1). This picture shows the growth rate of the zebra mussel since it was found in the Great Lakes.
Slideshow: Zebra Mussel's Niche and Interactions with Itself and Other Organisms.
The zebra mussel doesn't have a specfic niche. The zebra mussel instead just attaches itself to anything that it can (walls, other shells or mussels, bottles, boats, etc). As you can see in my slideshow, their are pictures of zebra mussels attaching to a number of random objects like a bottle or a lobster. Recently, because the zebra mussel was an invasive species, they can do a lot of harm to native animals by attaching themselves to it, not allowing it to move and then eventually die.
Interspecific and Intraspecific Interactions:
Just like what was stated above, the Zebra Mussel interacts with other organisms and other Zebra Mussels by attaching itself to it. Zebra Mussels can kill other organisms and even other zebra mussels if too many of them are attached to a single organism. Ever since the Zebra Mussel was introduced to the United States, it has been a nuisance to everyone. The Zebra Mussel have been taking the food from small freshwater fish, slowly killing them off. They also clog up drainage pipes and other pipes that are near the water by attaching to the inside of the pipe.
Zebra mussels are primary consumers, since they eat algae and other small producers. They filter them out of the water, that is why they are called filter feeders.