Ismarida lake and its lake complex are located in the south side of Rodopi prefecture.
It took its name from the neighboring Ismaros mountain but locals call the lake "Mitrikou» or "Mana" (mother).
Ismarida lake is a unified complex of water biotopes including the Vosvozi and Filiouri river falls and with five lagoons: Xirolimni (Ganariou), Karatza (Arogi), Aliki (Mesi), Ptelea and Elos (Karatzali) that are formed along the coastline of the Aegean sea. Mitriko lake is one of the rarest shallow lakes with fresh water and the only one left in North Greece. It has ellipsoid shape with 2km length and 1km width while the size of the water surface is between 2.000-3.000 acres with approximately 1-1.5 m depth. The lake waters are drained to the sea through a narrow access arm.
The lake is mainly used for fishing and irrigating the surrounding fields. The areas that surround the lake overflow and when drained they are used as pastures. The usage of the lake for amusement, research and educational purposes is also significant.
In the surrounding area of the wetland scientists discovered 190 bird species. Some of the rarest species are: the oystercatcher, the little egret, the kentish plover, the spoonbill, the glossy ibis, the avocet, the black-winged stilt, the stone curlew and the collared pratincole. Other bird species such as silver pelicans, flamingos, divers, phalacrocoracidae, herons, geese, ducks, cormorants, pygmy cormorant, white-headed ducks etc also nest in the area.
Eel, bass, striped mullet, common sole and gilthead sea bream are the mostly met fish species in the water biotope, while many species of reptiles and mammals with more infrequent being the Otter are also found here.
Many other plant species, such as water lily, sea lily, ash-tree, poplar tree, willows, water elm etc, live in the wetland.