HomeCompare fishBloodfin tetra vs Head-and-taillight tetra Bloodfin tetra vs Head-and-taillight tetra: can they live together? Verdict: CompatibleBoth are comfortable at 22–26°C (72–79°F).A pH of 6.0–8.0 suits both.Minimum tank for the pair: 75 L (20 US gal)Side by sideBloodfin tetraHead-and-taillight tetraAdult size5.5 cm (2.2 in)5 cm (2 in)Minimum tank75 L (20 US gal)75 L (20 US gal)Temperature18–28°C (64–82°F)22–26°C (72–79°F)pH6.0–8.06.0–8.0Hardness10–30 dGH (178–535 ppm)5–19 dGH (89–339 ppm)TemperamentPeacefulPeacefulCommunity tankExcellentExcellentCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesBloodfin tetraAphyocharax anisitsiHead-and-taillight tetraHemigrammus ocellifer