HomeCompare fishRed rainbowfish vs Chinese sucker Red rainbowfish vs Chinese sucker: can they live together? Verdict: Not recommendedAn adult Chinese sucker is about 5 times the length of a Red rainbowfish and may eat it.Both are comfortable at 22–25°C (72–77°F).A pH of 7.0–7.5 suits both.Side by sideRed rainbowfishChinese suckerAdult size12 cm (4.7 in)60 cm (24 in)Minimum tank150 L (40 US gal)455 L (120 US gal)Temperature22–25°C (72–77°F)18–28°C (64–82°F)pH7.0–8.06.0–7.5Hardness9–19 dGH (161–339 ppm)–TemperamentPeacefulPeacefulCommunity tankGoodGoodCare levelEasyModerateDietOmnivoreOmnivoreSpecies profilesRed rainbowfishGlossolepis incisusChinese suckerMyxocyprinus asiaticus