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🧬 Biological Classification (Kingdom to Species)Oryzias latipes

Kingdom

Animalia

Phylum

Chordata

Class

Actinopteri

Order

Beloniformes

Family

Adrianichthyidae

Genus

Oryzias

Species

Oryzias latipes

Actinopteri🍂 Omnivore

Japanese rice fish

Oryzias latipes (Japanese rice fish · ミナミメダカ)

🛡️ Conservation Status (IUCN Red List)LC (Least Concern)

DDData Deficient

LCLeast Concern

NTNear Threatened

VUVulnerable

ENEndangered

CRCritically End.

EWExtinct in Wild

EXExtinct

Geological Era

Extant

Diet

Omnivore

Length · Height

4cm · No data

Mass · Top Speed

No data · No data

Habitat & Fossil Locality

Lowland rice paddies, ponds, swamps, slow streams, and brackish estuaries; in Korea, lower reaches of rivers flowing into the East Sea, the Nakdong and Tamjingang Rivers, and West and South Sea islands

💡 Everyday Comparisons for Size, Mass & Speed

💡 Seen in rice paddies, ponds, and small lowland waterways, it is a fish for which FishBase lists 'paddy fields' as a habitat.
💡 Easy to keep in home aquariums, it is raised at home and is also used in laboratory research.
💡 Its maximum body length of 4 cm is about 1.5 times the diameter of a Korean 500-won coin (2.65 cm) (Comparison).

Reference standards: coach bus ~12 m, mid-size car ~4.9 m, compact car ~1 t, basketball hoop 3.05 m, credit card 8.56 cm.

#송사리#Oryzias latipes

📖 1. Overview

The Japanese rice fish is a small freshwater fish around 4 cm long that lives in schools near the surface of rice paddies, ponds, and slow streams.

🦴 2. Anatomy & Morphology

Its body is streamlined and laterally compressed, with the dorsal fin set close to the caudal peduncle. The base of the anal fin is long with a serrated outer margin, and the dark spot on the rear flank becomes darker during the spawning season.

🔍 3. Ecology & Behavior

It is active during the day and feeds mainly on zooplankton. Its spawning season is May–July, and it lays eggs in the early morning.

🇰🇷 4. Connection to Korea

In Korea, it is listed on the National List of Species of Korea as living in lower reaches of rivers flowing into the East Sea, the Nakdong River, the Tamjingang River, and islands of the West and South Seas.