Scientific Name
Oryzias minutillus

Common Name
Dwarf medaka

Biology
Dorsal soft rays (total): 5-7; Anal soft rays: 17 - 21; Vertebrae: 24 - 28. Principal caudal fin rays 4/5 (Ref. 27658); no orange margins on caudal fin (Ref. 43281).

Classification

Classified By

Smith, 1945

Class

Ray-finned fishes (Actinopterygii)

Order

Needle fishes (Beloniformes)

Family

Ricefishes (Adrianichthyidae)

Distribution

Region

Asia

Distribution

Asia: Chao Phraya basin in Thailand and Malay Peninsula. China, Myanmar, Laos, Cambodia, Viet Nam.

Range

Unknown

Environment

Climate

Tropical

Water Temperature From

22 °C

Water Temperature To

25 °C

Depth From - meters

Unknown m

Depth To - meters

Unknown m

Zone

benthopelagic

Environment

Freshwater; ; pH range: 7.5 - 8.5 benthopelagic; non-migratory

Trophic Level

3 s.e. 0.39 Based on size and trophs of closest relatives

Occurs in Marine / Salt water

False

Occurs in Brackish water

False

Occurs in Fresh Water

True

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

2.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Low vulnerability (10 of 100)

Resilience

Low, minimum population doubling time 4.5 - 14 years (Assuming fec

Threat To Humans

Harmless

IUCN Red List Status

Least Concern (LC)