HomeCompare fishZig-zag eel vs Red rainbowfish Zig-zag eel vs Red rainbowfish: can they live together? Verdict: Not recommendedThe Zig-zag eel is aggressive towards other fish.An adult Zig-zag eel is about 3 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 sideZig-zag eelRed rainbowfishAdult size38 cm (15 in)12 cm (4.7 in)Minimum tank475 L (125 US gal)150 L (40 US gal)Temperature22–27°C (72–81°F)22–25°C (72–77°F)pH6.5–7.57.0–8.0Hardness–9–19 dGH (161–339 ppm)TemperamentAggressivePeacefulCommunity tankGoodGoodCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesZig-zag eelMastacembelus armatusRed rainbowfishGlossolepis incisus