Medaka (Rice Fish)

Medaka (Rice Fish)

Oryzias latipes

Fancy medaka are hugely popular right now. They handle 4–32°C, so they live in a room without a heater. They stay near the surface with an upturned mouth, and breed readily, sticking eggs to plants.

Temp 4~32°CpH 6.2~8.5GH 3~22Adult 3.5 cmGroup 3+Min. tank 15 L · 30 cm+ longSwims topPrice $0.57

How many fit in each tank?

The largest group where none died in 90 days. Tap water · black sand · bacteria starter on day 1 · fish added on day 10 · 25% weekly water changes.

30 cm cube
12
45 cm standard
15
60 cm standard
19
90 cm standard
29
120 cm standard
34
120 cm large
45
Run a 60 cm standard tank with 19 yourself →

Don’t keep with

The same rules the engine uses for tankmates.

Eaten by

AngelfishOscar

Bullied by

Tiger BarbBettaDwarf GouramiYoyo LoachCockatoo CichlidElectric Yellow CichlidKribensisSaulosi MbunaRoundtail Paradise FishRed-tailed Black Shark

Good tankmates

No eating or bullying either way, with plenty of overlap in temperature and pH. Fish that swim at a different level come first.

Korean Native ShrimpTopmouth GudgeonWeather LoachKorean Rose BitterlingMalaysian Trumpet SnailOrange Dwarf Crayfish (CPO)

The numbers on this page come from the Water Kiwoogi simulator model; real tanks can differ.