HomeCompare fishForktail rainbowfish vs Glowlight tetra Forktail rainbowfish vs Glowlight tetra: can they live together? Verdict: CompatibleBoth are comfortable at 24–26°C (75–79°F).A pH of 6.0–8.0 suits both.Minimum tank for the pair: 75 L (20 US gal)Side by sideForktail rainbowfishGlowlight tetraAdult size5 cm (2 in)5 cm (2 in)Minimum tank75 L (20 US gal)40 L (11 US gal)Temperature24–26°C (75–79°F)24–28°C (75–82°F)pH6.0–8.06.0–8.0Hardness5–12 dGH (89–214 ppm)5–12 dGH (89–214 ppm)TemperamentPeacefulPeacefulCommunity tankGoodExcellentCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesForktail rainbowfishPseudomugil furcatusGlowlight tetraHemigrammus erythrozonus