HomeCompare fishForktail rainbowfish vs Javanese ricefish Forktail rainbowfish vs Javanese ricefish: can they live together? Verdict: With cautionTheir temperature ranges only just meet, at 24°C (75°F).A pH of 7.5–8.0 suits both.Minimum tank for the pair: 75 L (20 US gal)Side by sideForktail rainbowfishJavanese ricefishAdult size5 cm (2 in)4.5 cm (1.8 in)Minimum tank75 L (20 US gal)75 L (20 US gal)Temperature24–26°C (75–79°F)20–24°C (68–75°F)pH6.0–8.07.5–8.5Hardness5–12 dGH (89–214 ppm)2–10 dGH (36–178 ppm)TemperamentPeacefulPeacefulCommunity tankGoodWith cautionCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesForktail rainbowfishPseudomugil furcatusJavanese ricefishOryzias javanicus