HomeCompare fishZig-zag eel vs Dwarf rainbowfish Zig-zag eel vs Dwarf rainbowfish: can they live together? Verdict: Not recommendedThe Zig-zag eel is aggressive towards other fish.An adult Zig-zag eel is about 8 times the length of a Dwarf rainbowfish and may eat it.Both are comfortable at 22–27°C (72–81°F).A pH of 6.5–7.5 suits both.Side by sideZig-zag eelDwarf rainbowfishAdult size38 cm (15 in)5 cm (2 in)Minimum tank475 L (125 US gal)150 L (40 US gal)Temperature22–27°C (72–81°F)22–28°C (72–82°F)pH6.5–7.56.5–7.5Hardness–8–18 dGH (143–321 ppm)TemperamentAggressivePeacefulCommunity tankGoodGoodCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesZig-zag eelMastacembelus armatusDwarf rainbowfishMelanotaenia praecox