HomeCompare fishZig-zag eel vs Butterfly splitfin Zig-zag eel vs Butterfly splitfin: can they live together? Verdict: Not recommendedThe Zig-zag eel is aggressive towards other fish.An adult Zig-zag eel is about 5 times the length of a Butterfly splitfin and may eat it.Both are comfortable at 26–27°C (79–81°F).A pH of 6.5–7.5 suits both.Side by sideZig-zag eelButterfly splitfinAdult size38 cm (15 in)8 cm (3.1 in)Minimum tank475 L (125 US gal)75 L (20 US gal)Temperature22–27°C (72–81°F)26–32°C (79–90°F)pH6.5–7.56.0–8.0Hardness–9–19 dGH (161–339 ppm)TemperamentAggressivePeacefulCommunity tankGoodGoodCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesZig-zag eelMastacembelus armatusButterfly splitfinAmeca splendens