HomeCompare fishBloodfin tetra vs Black phantom tetra Bloodfin tetra vs Black phantom tetra: can they live together? Verdict: CompatibleBoth are comfortable at 22–28°C (72–82°F).A pH of 6.0–7.5 suits both.Minimum tank for the pair: 75 L (20 US gal)Side by sideBloodfin tetraBlack phantom tetraAdult size5.5 cm (2.2 in)4 cm (1.6 in)Minimum tank75 L (20 US gal)75 L (20 US gal)Temperature18–28°C (64–82°F)22–28°C (72–82°F)pH6.0–8.06.0–7.5Hardness10–30 dGH (178–535 ppm)2–18 dGH (36–321 ppm)TemperamentPeacefulPeacefulCommunity tankExcellentExcellentCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesBloodfin tetraAphyocharax anisitsiBlack phantom tetraHyphessobrycon megalopterus