Edit Oryzias minutillus
You can suggest changes to this profile. A moderator will review each change.
Name
Scientific name
Oryzias minutillus
Described by
Authority Smith, Year 1945
Family
Adrianichthyidae
Common names
Dwarf Medaka
Photograph credits
All 2 credited
Summary
The dwarf medaka, Oryzias minutillus, is a miniature ricefish from Thailand, with records from Myanmar, Cambodia and southern China. It liv…
Size and aquarium
Maximum size
17mm, standard length
Aquarium size
Minimum length 40 cm, Minimum depth 20 cm
Water
Water conditions
Temperature 23–32°C, pH 6–7.5
Hardness
2–15dGH
Conductivity
Not recorded
Behaviour
Temperament
Peaceful
Social needs
A shoal or group
Community suitability
Community-safe
Where it lives
Countries, regions, rivers and lakes
Myanmar, Thailand, Chao Phraya, Salween
Writing
Etymology
Oryzias: from the Greek ὄρυζα (oryza), meaning 'rice', in reference to the tendency of some members of the genus to inhabit rice paddy fields. minutillus: from…
Distribution
The type series was collected from 'a small canal in Bangkok, Central Thailand', and it's subsequently been recorded throughout the country in the Chao Phraya …
Habitat
An exclusive inhabitant of fresh, normally standing, waters including shallow pools, ditches, rice paddies and clear water swamps. Aquatic vegetation often pro…
Aquarium size
An aquarium with base dimensions of 40 ∗ 20 cm or more is recommended for a group.
Maintenance
Best maintained in a heavily planted set-up, ideally with a dark substrate, patches of dense vegetation, and some open areas. Other décor can consist of twiste…
Water conditions
Not written yet
Diet
A micropredator feeding on small insects, worms, crustaceans and other zooplankton in nature. In the aquarium it will accept dried foods of a suitable size but…
Behaviour and compatibility
Generally peaceful but does not make an ideal addition to many communities due to its small size. Should you wish to maintain it alongside other fishes diminut…
Sexual dimorphism
In males the distal margin of the anal-fin is convex, the genital papilla forms a short tube, and the anterior dorsal and anal-fin rays are extended. In female…
Reproduction
Quite easy to breed and fairly prolific, with females capable of producing batches of eggs every few days or even on a daily basis when in good condition. Spaw…
Notes
O. minutillus is traded occasionally and is also known by the vernacular name 'dwarf ricefish'. Within the genus it appears to be most closely-related to the o…
References
References
12 on this profile