HomeCompare fishChocolate gourami vs Roundtail paradisefish Chocolate gourami vs Roundtail paradisefish: can they live together? Verdict: With cautionThe Roundtail paradisefish can be semi-aggressive or nip fins.The Chocolate gourami is best kept in a species tank.The Chocolate gourami can be semi-aggressive or nip fins.Their temperature ranges only just meet, at 26°C (79°F).A pH of 6.0 suits both.Minimum tank for the pair: 115 L (30 US gal)Side by sideChocolate gouramiRoundtail paradisefishAdult size7 cm (2.8 in)7 cm (2.8 in)Minimum tank75 L (20 US gal)115 L (30 US gal)Temperature26–31°C (79–88°F)16–26°C (61–79°F)pH4.0–6.06.0–8.0Hardness0–4 dGH (0–71 ppm)5–19 dGH (89–339 ppm)TemperamentSemi-aggressiveSemi-aggressiveCommunity tankNot suitable–Care levelDifficultEasyDietOmnivoreCarnivoreSpecies profilesChocolate gouramiSphaerichthys osphromenoidesRoundtail paradisefishMacropodus opercularis