HomeCompare fishHead-and-taillight tetra vs Eel Loach Head-and-taillight tetra vs Eel Loach: can they live together? Verdict: Not recommendedAn adult Eel Loach is about 38 times the length of a Head-and-taillight tetra and may eat it.Both are comfortable at 24–26°C (75–79°F).A pH of 6.0 suits both.Side by sideHead-and-taillight tetraEel LoachAdult size5 cm (2 in)190.5 cm (75 in)Minimum tank75 L (20 US gal)75 L (20 US gal)Temperature22–26°C (72–79°F)24–26°C (75–79°F)pH6.0–8.05.0–6.0Hardness5–19 dGH (89–339 ppm)5–12 dGH (89–214 ppm)TemperamentPeacefulPeacefulCommunity tankExcellentGoodCare levelEasyEasyDietOmnivoreCarnivoreSpecies profilesHead-and-taillight tetraHemigrammus ocelliferEel LoachPangio anguillaris