Ruznorode

Ruznorode, also written ruznorode, is a small semi-aquatic amphibian native to the freshwater wetlands of the Nordian river basins. The name ruznorode derives from local terms for river and wanderer, reflecting its habit of moving between water and shore.

Description: Adults reach 6–9 cm in snout-vent length. The body is slender with smooth skin. Dorsal coloration varies from olive-brown to gray, often with a narrow reddish midline or dorsolateral stripe. The ventral surface is pale. Hind limbs are webbed, and toe pads aid in climbing among submerged vegetation.

Habitat and distribution: The species inhabits slow-moving streams, marshes, and floodplains in the Nordian basins. It favors densely vegetated margins and shallow shelves. It is considered endemic to this region, with fragmented populations across several river systems.

Behavior and ecology: Ruznorode is primarily nocturnal and opportunistic, feeding on aquatic insects, crustacean larvae, and mollusks. Breeding occurs in spring after seasonal rains; eggs are laid in gelatinous clutches attached to submerged vegetation. Tadpoles develop in 8–12 weeks, with progression influenced by temperature and food availability. Predators include herons and larger fish; camouflage and rapid bursts are common escape strategies.

Conservation and taxonomy: The species is listed as Least Concern within its native range, though habitat loss and water pollution pose threats. It was first described scientifically in 1992 by L. Verdant. The epithet ru znorode is derived from regional language referring to its riverine habitat.