Marmorated medaka (Oryzias marmoratus) fish species and information / pictures of Marmorated medaka - Oryzias marmoratus

Marmorated medaka (Oryzias marmoratus) fish species information

Scientific Name
Oryzias marmoratus

Common Name
Marmorated medaka

Biology
Dorsal soft rays (total): 9-12; Anal soft rays: 20 - 26. Distinguished from all other members of the genus by the combination of the following characters: 20-26 anal rays; 9-12 dorsal rays; 31-32 scales in lateral row; body depth 25-31% SL; and color pattern of male in life with greyish brown head and body with diffuse dark brown blotches irregularly dispersed on body and always with a row of 5-9 larger blotches more or less irregularly organized above axial stripe (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
3.36 s.e. 0.44 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
4.1 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
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)