HomeCompare fishClown rasbora vs Northern trout gudgeon Clown rasbora vs Northern trout gudgeon: can they live together? Verdict: With cautionThe Northern trout gudgeon can be semi-aggressive or nip fins.Both are comfortable at 24–26°C (75–79°F).A pH of 6.0–7.0 suits both.Minimum tank for the pair: 150 L (40 US gal)Side by sideClown rasboraNorthern trout gudgeonAdult size9 cm (3.5 in)17.5 cm (6.9 in)Minimum tank110 L (29 US gal)150 L (40 US gal)Temperature24–29°C (75–84°F)24–26°C (75–79°F)pH5.5–7.06.0–7.8Hardness2–10 dGH (36–178 ppm)–TemperamentPeacefulSemi-aggressiveCommunity tankGoodGoodCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesClown rasboraRasbora kalochromaNorthern trout gudgeonMogurnda mogurnda