HomeCompare fishZig-zag eel vs Bloodfin tetra Zig-zag eel vs Bloodfin tetra: can they live together? Verdict: Not recommendedThe Zig-zag eel is aggressive towards other fish.An adult Zig-zag eel is about 7 times the length of a Bloodfin tetra 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 eelBloodfin tetraAdult size38 cm (15 in)5.5 cm (2.2 in)Minimum tank475 L (125 US gal)75 L (20 US gal)Temperature22–27°C (72–81°F)18–28°C (64–82°F)pH6.5–7.56.0–8.0Hardness–10–30 dGH (178–535 ppm)TemperamentAggressivePeacefulCommunity tankGoodExcellentCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesZig-zag eelMastacembelus armatusBloodfin tetraAphyocharax anisitsi