HomeCompare fishBloodfin tetra vs Redtail splitfin Bloodfin tetra vs Redtail splitfin: can they live together? Verdict: With cautionThe Redtail splitfin can be semi-aggressive or nip fins.Both are comfortable at 18–28°C (64–82°F).A pH of 6.0–8.0 suits both.Minimum tank for the pair: 75 L (20 US gal)Side by sideBloodfin tetraRedtail splitfinAdult size5.5 cm (2.2 in)6 cm (2.4 in)Minimum tank75 L (20 US gal)75 L (20 US gal)Temperature18–28°C (64–82°F)15–32°C (59–90°F)pH6.0–8.06.0–8.0Hardness10–30 dGH (178–535 ppm)9–19 dGH (161–339 ppm)TemperamentPeacefulSemi-aggressiveCommunity tankExcellentGoodCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesBloodfin tetraAphyocharax anisitsiRedtail splitfinXenotoca eiseni