HomeCompare fishGlowlight tetra vs Black sharkminnow Glowlight tetra vs Black sharkminnow: can they live together? Verdict: Not recommendedAn adult Black sharkminnow is about 18 times the length of a Glowlight tetra and may eat it.Both are comfortable at 24–27°C (75–81°F).A pH of 6.5–7.5 suits both.Side by sideGlowlight tetraBlack sharkminnowAdult size5 cm (2 in)90 cm (35 in)Minimum tank40 L (11 US gal)475 L (125 US gal)Temperature24–28°C (75–82°F)24–27°C (75–81°F)pH6.0–8.06.5–7.5Hardness5–12 dGH (89–214 ppm)2–15 dGH (36–268 ppm)TemperamentPeacefulPeacefulCommunity tankExcellentGoodCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesGlowlight tetraHemigrammus erythrozonusBlack sharkminnowLabeo chrysophekadion