HomeCompare fishJavanese ricefish vs Kamaka rainbowfish Javanese ricefish vs Kamaka rainbowfish: can they live together? Verdict: Not recommendedAn adult Kamaka rainbowfish is about 3 times the length of a Javanese ricefish and may eat it.Their preferred pH ranges don't overlap.Both are comfortable at 20–22°C (68–72°F).Side by sideJavanese ricefishKamaka rainbowfishAdult size4.5 cm (1.8 in)14 cm (5.5 in)Minimum tank75 L (20 US gal)210 L (55 US gal)Temperature20–24°C (68–75°F)18–22°C (64–72°F)pH7.5–8.56.5–7.2Hardness2–10 dGH (36–178 ppm)–TemperamentPeacefulPeacefulCommunity tankWith cautionWith cautionCare levelEasyDifficultDietOmnivoreOmnivoreSpecies profilesJavanese ricefishOryzias javanicusKamaka rainbowfishMelanotaenia kamaka