HomeCompare fishClown loach vs Northern trout gudgeon Clown loach vs Northern trout gudgeon: can they live together? Verdict: With cautionThe Northern trout gudgeon can be semi-aggressive or nip fins.The Clown loach grows about twice as long as the Northern trout gudgeon; watch for bullying or predation.Both are comfortable at 24–26°C (75–79°F).A pH of 6.0–7.5 suits both.Minimum tank for the pair: 210 L (55 US gal)Side by sideClown loachNorthern trout gudgeonAdult size50 cm (20 in)17.5 cm (6.9 in)Minimum tank210 L (55 US gal)150 L (40 US gal)Temperature24–30°C (75–86°F)24–26°C (75–79°F)pH5.0–7.56.0–7.8Hardness5–12 dGH (89–214 ppm)–TemperamentPeacefulSemi-aggressiveCommunity tankGoodGoodCare levelModerateEasyDietOmnivoreOmnivoreSpecies profilesClown loachChromobotia macracanthusNorthern trout gudgeonMogurnda mogurnda