HomeCompare fishSpotted betta vs Roundtail paradisefish Spotted betta vs Roundtail paradisefish: can they live together? Verdict: With cautionThe Roundtail paradisefish can be semi-aggressive or nip fins.The Spotted betta is best kept in a species tank.Both are comfortable at 22–24°C (72–75°F).A pH of 6.5–7.5 suits both.Minimum tank for the pair: 115 L (30 US gal)Side by sideSpotted bettaRoundtail paradisefishAdult size6 cm (2.4 in)7 cm (2.8 in)Minimum tank20 L (5 US gal)115 L (30 US gal)Temperature22–24°C (72–75°F)16–26°C (61–79°F)pH6.5–7.56.0–8.0Hardness7–22 dGH (125–393 ppm)5–19 dGH (89–339 ppm)TemperamentPeacefulSemi-aggressiveCommunity tankNot suitable–Care levelEasyEasyDietOmnivoreCarnivoreSpecies profilesSpotted bettaBetta pictaRoundtail paradisefishMacropodus opercularis