HomeCompare fishGlowlight tetra vs Black phantom tetra Glowlight tetra vs Black phantom tetra: can they live together? Verdict: CompatibleBoth are comfortable at 24–28°C (75–82°F).A pH of 6.0–7.5 suits both.Minimum tank for the pair: 75 L (20 US gal)Side by sideGlowlight tetraBlack phantom tetraAdult size5 cm (2 in)4 cm (1.6 in)Minimum tank40 L (11 US gal)75 L (20 US gal)Temperature24–28°C (75–82°F)22–28°C (72–82°F)pH6.0–8.06.0–7.5Hardness5–12 dGH (89–214 ppm)2–18 dGH (36–321 ppm)TemperamentPeacefulPeacefulCommunity tankExcellentExcellentCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesGlowlight tetraHemigrammus erythrozonusBlack phantom tetraHyphessobrycon megalopterus