HomeCompare fishEel Loach vs Northern trout gudgeon Eel Loach vs Northern trout gudgeon: can they live together? Verdict: Not recommendedThe Northern trout gudgeon can be semi-aggressive or nip fins.An adult Eel Loach is about 11 times the length of a Northern trout gudgeon and may eat it.Both are comfortable at 24–26°C (75–79°F).A pH of 6.0 suits both.Side by sideEel LoachNorthern trout gudgeonAdult size190.5 cm (75 in)17.5 cm (6.9 in)Minimum tank75 L (20 US gal)150 L (40 US gal)Temperature24–26°C (75–79°F)24–26°C (75–79°F)pH5.0–6.06.0–7.8Hardness5–12 dGH (89–214 ppm)–TemperamentPeacefulSemi-aggressiveCommunity tankGoodGoodCare levelEasyEasyDietCarnivoreOmnivoreSpecies profilesEel LoachPangio anguillarisNorthern trout gudgeonMogurnda mogurnda