HomeCompare fishGarnet tetra vs Black phantom tetra Garnet tetra vs Black phantom tetra: can they live together? Verdict: CompatibleBoth are comfortable at 23–27°C (73–81°F).A pH of 6.0 suits both.Minimum tank for the pair: 75 L (20 US gal)Side by sideGarnet tetraBlack phantom tetraAdult size5 cm (2 in)4 cm (1.6 in)Minimum tank55 L (15 US gal)75 L (20 US gal)Temperature23–27°C (73–81°F)22–28°C (72–82°F)pH5.0–6.06.0–7.5Hardness5–12 dGH (89–214 ppm)2–18 dGH (36–321 ppm)TemperamentPeacefulPeacefulCommunity tankExcellentExcellentCare level–EasyDietOmnivoreOmnivoreSpecies profilesGarnet tetraHemigrammus pulcherBlack phantom tetraHyphessobrycon megalopterus