HomeCompare fishTami River rainbowfish vs Blackfin pearlfish Tami River rainbowfish vs Blackfin pearlfish: can they live together? Verdict: Not recommendedThe Blackfin pearlfish is best kept in a species tank.The Blackfin pearlfish is aggressive towards other fish.The Tami River rainbowfish is best kept in a species tank.Both are comfortable at 22–24°C (72–75°F).A pH of 7.0 suits both.Side by sideTami River rainbowfishBlackfin pearlfishAdult size8 cm (3.1 in)7 cm (2.8 in)Minimum tank210 L (55 US gal)55 L (15 US gal)Temperature22–24°C (72–75°F)18–24°C (64–75°F)pH7.0–8.06.0–7.0Hardness9–19 dGH (161–339 ppm)5–12 dGH (89–214 ppm)TemperamentPeacefulAggressiveCommunity tankNot suitableNot suitableCare levelEasyModerateDietOmnivoreCarnivoreSpecies profilesTami River rainbowfishGlossolepis pseudoincisusBlackfin pearlfishAustrolebias nigripinnis