HomeCompare fishClown barb vs Blackline rasbora Clown barb vs Blackline rasbora: can they live together? Verdict: With cautionThe Clown barb grows about twice as long as the Blackline rasbora; watch for bullying or predation.Both are comfortable at 24–26°C (75–79°F).A pH of 6.5–7.0 suits both.Minimum tank for the pair: 115 L (30 US gal)Side by sideClown barbBlackline rasboraAdult size14 cm (5.5 in)5 cm (2 in)Minimum tank75 L (20 US gal)115 L (30 US gal)Temperature24–28°C (75–82°F)22–26°C (72–79°F)pH6.0–7.06.5–7.0Hardness7–17 dGH (125–303 ppm)5–12 dGH (89–214 ppm)TemperamentPeacefulPeacefulCommunity tankGoodExcellentCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesClown barbPuntius everettiBlackline rasboraRasbora borapetensis