HomeCompare fishDwarf rainbowfish vs Chinese sucker Dwarf rainbowfish vs Chinese sucker: can they live together? Verdict: Not recommendedAn adult Chinese sucker is about 12 times the length of a Dwarf rainbowfish and may eat it.Both are comfortable at 22–28°C (72–82°F).A pH of 6.5–7.5 suits both.Side by sideDwarf rainbowfishChinese suckerAdult size5 cm (2 in)60 cm (24 in)Minimum tank150 L (40 US gal)455 L (120 US gal)Temperature22–28°C (72–82°F)18–28°C (64–82°F)pH6.5–7.56.0–7.5Hardness8–18 dGH (143–321 ppm)–TemperamentPeacefulPeacefulCommunity tankGoodGoodCare levelEasyModerateDietOmnivoreOmnivoreSpecies profilesDwarf rainbowfishMelanotaenia praecoxChinese suckerMyxocyprinus asiaticus