HomeCompare fishZig-zag eel vs Elephantnose fish Zig-zag eel vs Elephantnose fish: can they live together? Verdict: Not recommendedThe Elephantnose fish is aggressive towards other fish.The Zig-zag eel is aggressive towards other fish.Both are comfortable at 23–27°C (73–81°F).A pH of 6.5–7.0 suits both.Side by sideZig-zag eelElephantnose fishAdult size38 cm (15 in)23 cm (9.1 in)Minimum tank475 L (125 US gal)115 L (30 US gal)Temperature22–27°C (72–81°F)23–28°C (73–82°F)pH6.5–7.56.0–7.0Hardness–5–19 dGH (89–339 ppm)TemperamentAggressiveAggressiveCommunity tankGoodWith cautionCare levelEasyDifficultDietOmnivoreOmnivoreSpecies profilesZig-zag eelMastacembelus armatusElephantnose fishGnathonemus petersii