HomeCompare fishRed rainbowfish vs Eel Loach Red rainbowfish vs Eel Loach: can they live together? Verdict: Not recommendedAn adult Eel Loach is about 16 times the length of a Red rainbowfish and may eat it.Their preferred pH ranges don't overlap.Both are comfortable at 24–25°C (75–77°F).Side by sideRed rainbowfishEel LoachAdult size12 cm (4.7 in)190.5 cm (75 in)Minimum tank150 L (40 US gal)75 L (20 US gal)Temperature22–25°C (72–77°F)24–26°C (75–79°F)pH7.0–8.05.0–6.0Hardness9–19 dGH (161–339 ppm)5–12 dGH (89–214 ppm)TemperamentPeacefulPeacefulCommunity tankGoodGoodCare levelEasyEasyDietOmnivoreCarnivoreSpecies profilesRed rainbowfishGlossolepis incisusEel LoachPangio anguillaris