[1] It is under the jurisdiction of the Ministry of Environment and includes a research center, which monitors the ecosystems, and undertakes various conservation measures.

The known avifauna can be grouped into the orders: Podicipediformes, Pelecaniformes, Phoenicopteriformes, Falconiformes, Anseriformes, Galliformes, Gruiformes, Charadriiformes, Columbiformes, Cuculiformes, Strigiformes, Caprimulgiformes, Apodiformes, Coraciiformes, Piciformes, and Passeriformes.

[2] Two of the species are regional endemics Armenian gull (Larus armenicus) and Mountain Chiffchaff (Phylloscopus sindianus).

The Lake's avifauna faced significant decline after lowering the water level and drying the Gilli marshes, however, started from 2007, the return of some bird species was noted.

In the Masrik River valley, the following species of reptiles and amphibians can be found: Bufo viridis, Hyla arborea, Rana ridibunda, Rana macrocnemis, Paralaudakia caucasia, Anguis fragilis, Eremias arguta, Lacerta agilis, Lacerta strigata, Parvilacerta parva, Darevskia unisexualis, Darevskia valentini, Platyceps najadum, Hemorrhois ravergieri, Coronella austriaca, Eirenis punctatolineatus, Natrix natrix, Natrix tessellata, Vipera ursinii.

The river is of great importance, since it is a spawning place for such endemic species as Sevan trout (Salmo ischchan), Sevan koghak (Capoeta capoeta sevangi) Besides, the young fish of the aforementioned species also live in these rivers till one year of age.