HomeCompare fishZig-zag eel vs Redtail splitfin Zig-zag eel vs Redtail splitfin: can they live together? Verdict: Not recommendedThe Redtail splitfin can be semi-aggressive or nip fins.The Zig-zag eel is aggressive towards other fish.An adult Zig-zag eel is about 6 times the length of a Redtail splitfin 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 eelRedtail splitfinAdult size38 cm (15 in)6 cm (2.4 in)Minimum tank475 L (125 US gal)75 L (20 US gal)Temperature22–27°C (72–81°F)15–32°C (59–90°F)pH6.5–7.56.0–8.0Hardness–9–19 dGH (161–339 ppm)TemperamentAggressiveSemi-aggressiveCommunity tankGoodGoodCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesZig-zag eelMastacembelus armatusRedtail splitfinXenotoca eiseni