HomeCompare fishZig-zag eel vs Crescent betta Zig-zag eel vs Crescent betta: can they live together? Verdict: Not recommendedThe Zig-zag eel is aggressive towards other fish.An adult Zig-zag eel is about 6 times the length of a Crescent betta and may eat it.Both are comfortable at 24–27°C (75–81°F).A pH of 6.5–7.0 suits both.Side by sideZig-zag eelCrescent bettaAdult size38 cm (15 in)6 cm (2.4 in)Minimum tank475 L (125 US gal)40 L (11 US gal)Temperature22–27°C (72–81°F)24–30°C (75–86°F)pH6.5–7.56.0–7.0Hardness–5–19 dGH (89–339 ppm)TemperamentAggressivePeacefulCommunity tankGoodGoodCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesZig-zag eelMastacembelus armatusCrescent bettaBetta imbellis