HomeCompare fishAtlantic mudskipper vs Northern trout gudgeon Atlantic mudskipper vs Northern trout gudgeon: can they live together? Verdict: With cautionThe Northern trout gudgeon can be semi-aggressive or nip fins.The Atlantic mudskipper is best kept in a species tank.The Atlantic mudskipper can be semi-aggressive or nip fins.Both are comfortable at 25–26°C (77–79°F).A pH of 7.0–7.8 suits both.Minimum tank for the pair: 150 L (40 US gal)Side by sideAtlantic mudskipperNorthern trout gudgeonAdult size25 cm (9.8 in)17.5 cm (6.9 in)Minimum tank150 L (40 US gal)150 L (40 US gal)Temperature25–30°C (77–86°F)24–26°C (75–79°F)pH7.0–8.06.0–7.8Hardness10–25 dGH (178–446 ppm)–TemperamentSemi-aggressiveSemi-aggressiveCommunity tankNot suitableGoodCare levelEasyEasyDietCarnivoreOmnivoreSpecies profilesAtlantic mudskipperPeriophthalmus barbarusNorthern trout gudgeonMogurnda mogurnda