HomeCompare fishZig-zag eel vs Forktail rainbowfish Zig-zag eel vs Forktail 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 Forktail rainbowfish and may eat it.Both are comfortable at 24–26°C (75–79°F).A pH of 6.5–7.5 suits both.Side by sideZig-zag eelForktail rainbowfishAdult size38 cm (15 in)5 cm (2 in)Minimum tank475 L (125 US gal)75 L (20 US gal)Temperature22–27°C (72–81°F)24–26°C (75–79°F)pH6.5–7.56.0–8.0Hardness–5–12 dGH (89–214 ppm)TemperamentAggressivePeacefulCommunity tankGoodGoodCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesZig-zag eelMastacembelus armatusForktail rainbowfishPseudomugil furcatus