HomeCompare fishCrescent betta vs Black sharkminnow Crescent betta vs Black sharkminnow: can they live together? Verdict: Not recommendedAn adult Black sharkminnow is about 15 times the length of a Crescent betta and may eat it.Both are comfortable at 24–27°C (75–81°F).A pH of 6.5–7.0 suits both.Side by sideCrescent bettaBlack sharkminnowAdult size6 cm (2.4 in)90 cm (35 in)Minimum tank40 L (11 US gal)475 L (125 US gal)Temperature24–30°C (75–86°F)24–27°C (75–81°F)pH6.0–7.06.5–7.5Hardness5–19 dGH (89–339 ppm)2–15 dGH (36–268 ppm)TemperamentPeacefulPeacefulCommunity tankGoodGoodCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesCrescent bettaBetta imbellisBlack sharkminnowLabeo chrysophekadion