HomeCompare fishBlackfin pearlfish vs Javanese ricefish Blackfin pearlfish vs Javanese ricefish: can they live together? Verdict: Not recommendedThe Blackfin pearlfish is best kept in a species tank.The Blackfin pearlfish is aggressive towards other fish.Their preferred pH ranges don't overlap.Both are comfortable at 20–24°C (68–75°F).Side by sideBlackfin pearlfishJavanese ricefishAdult size7 cm (2.8 in)4.5 cm (1.8 in)Minimum tank55 L (15 US gal)75 L (20 US gal)Temperature18–24°C (64–75°F)20–24°C (68–75°F)pH6.0–7.07.5–8.5Hardness5–12 dGH (89–214 ppm)2–10 dGH (36–178 ppm)TemperamentAggressivePeacefulCommunity tankNot suitableWith cautionCare levelModerateEasyDietCarnivoreOmnivoreSpecies profilesBlackfin pearlfishAustrolebias nigripinnisJavanese ricefishOryzias javanicus