HomeCompare fishHead-and-taillight tetra vs Red phantom tetra Head-and-taillight tetra vs Red phantom tetra: can they live together? Verdict: CompatibleBoth are comfortable at 22–25°C (72–77°F).A pH of 6.0–7.5 suits both.Minimum tank for the pair: 75 L (20 US gal)Side by sideHead-and-taillight tetraRed phantom tetraAdult size5 cm (2 in)4 cm (1.6 in)Minimum tank75 L (20 US gal)55 L (15 US gal)Temperature22–26°C (72–79°F)22–25°C (72–77°F)pH6.0–8.05.5–7.5Hardness5–19 dGH (89–339 ppm)4–20 dGH (71–357 ppm)TemperamentPeacefulPeacefulCommunity tankExcellentExcellentCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesHead-and-taillight tetraHemigrammus ocelliferRed phantom tetraHyphessobrycon sweglesi