Scientific Name
Oryzias matanensis

Common Name
Matano medaka

Biology
Dorsal soft rays (total): 8-9; Anal soft rays: 20 - 25. Distinguished from all other members of the genus by the combination of the following characters: 41-47 vertical rows of scales; 8-9 dorsal rays; 20-25 anal rays; and the distinctive color pattern of males (Ref. 26687).

Classification

Classified By

Aurich, 1935

Class

Ray-finned fishes (Actinopterygii)

Order

Needle fishes (Beloniformes)

Family

Ricefishes (Adrianichthyidae)

Distribution

Region

Asia

Distribution

Asia: Indonesia.

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

3.53 s.e. 0.46 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

True

Physical Size and Genetics

Maximum Length

5.5 cm

Common Length

4.5 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

Aquarium: commercial

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

Vulnerable (VU) (D2)