HomeCompare fishDwarf rainbowfish vs Horseface loach Dwarf rainbowfish vs Horseface loach: can they live together? Verdict: Not recommendedAn adult Horseface loach is about 4 times the length of a Dwarf rainbowfish and may eat it.Both are comfortable at 25–28°C (77–82°F).A pH of 6.5–7.0 suits both.Side by sideDwarf rainbowfishHorseface loachAdult size5 cm (2 in)20 cm (7.9 in)Minimum tank150 L (40 US gal)210 L (55 US gal)Temperature22–28°C (72–82°F)25–29°C (77–84°F)pH6.5–7.56.0–7.0Hardness8–18 dGH (143–321 ppm)1–12 dGH (18–214 ppm)TemperamentPeacefulPeacefulCommunity tankGoodGoodCare levelEasy–DietOmnivoreOmnivoreSpecies profilesDwarf rainbowfishMelanotaenia praecoxHorseface loachAcantopsis choirorhynchos