HomeCompare fishFlame tetra vs Lemon tetra Flame tetra vs Lemon tetra: can they live together? Verdict: CompatibleBoth are comfortable at 22–28°C (72–82°F).A pH of 5.8–7.8 suits both.Minimum tank for the pair: 75 L (20 US gal)Side by sideFlame tetraLemon tetraAdult size4.5 cm (1.8 in)5 cm (2 in)Minimum tank55 L (15 US gal)75 L (20 US gal)Temperature22–28°C (72–82°F)22–28°C (72–82°F)pH5.8–7.85.5–8.0Hardness5–25 dGH (89–446 ppm)3–25 dGH (54–446 ppm)TemperamentPeacefulPeacefulCommunity tankGood–Care levelDifficultEasyDietOmnivoreOmnivoreSpecies profilesFlame tetraHyphessobrycon flammeusLemon tetraHyphessobrycon pulchripinnis