Common Water Rat vs ベニスズメ

Hydromys chrysogaster compared with Amandava amandava

Taxonomic Classification

Rank	Common Water Rat	ベニスズメ
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Aves (鳥類)
Order	Rodentia (ネズミ目)	Passeriformes (スズメ目)
Family	Muridae (Mice & Rats)	Estrildidae
Genus	Hydromys	Amandava
Species	Hydromys chrysogaster	Amandava amandava

Evolutionary Relationship

Common Water Rat and ベニスズメ share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Common Water Rat

LC — Least Concern

ベニスズメ

LC — Least Concern

Physical Characteristics

Attribute	Common Water Rat	ベニスズメ
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Water Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

ベニスズメ

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Widely distributed across Asia (10 countries), Europe (9 countries), and North America (United States).

Common Water Rat

<em>Hydromys chrysogaster</em>, commonly known as the common water rat or rakali, is a semi-aquatic rodent in the family Muridae, native to Australia and New Guinea. It is classified as Least Concern by the IUCN, reflecting its relatively stable population across a broad range of freshwater and estuarine habitats on the Australian continent and associated islands. The species typically inhabits the banks of rivers, lakes, wetlands, and estuaries, where it constructs burrows in streambanks. It is highly adapted for an aquatic lifestyle, with partially webbed hind feet, a flattened head, and a dense waterproof coat. <em>Hydromys chrysogaster</em> is a carnivore, typically feeding on fish, crustaceans, mussels, frogs, and aquatic invertebrates, which it often carries to elevated feeding platforms to consume. The species is nocturnal and crepuscular, most active during early morning and evening hours near the water's edge. Biological traits including average lifespan, body length, and weight remain poorly documented in standardized databases, though adults are generally robust for a rodent, reportedly reaching body lengths of 20–35 cm excluding the tail. Geographic range details for this particular record remain incompletely documented in available data sources. Ecologically, the common water rat is an important apex predator in small-scale freshwater food webs and serves as an indicator species for wetland health in Australian riparian systems.

ベニスズメ

ベニスズメ(Amandava amandava)は南アジアおよび東南アジアの森林に生息する鮮やかに着色された小型のスズメ科の鳥で、繁殖期の雄は体全体に白い斑点がある深紅色の羽毛を誇る。パキスタン、インドからインドネシア東部に至る水辺近くの背の高い草地、葦原、低木地に生息する。アジア全域で人気の愛玩鳥で、ヨーロッパ、日本、カリブ海の一部に導入個体群が定着している。群れで生活し、静かで音楽的な鳴き声を発する。