HomeCompare fishSlim betta vs Croaking gourami Slim betta vs Croaking gourami: can they live together? Verdict: With cautionThe Croaking gourami is best kept in a species tank.The Croaking gourami can be semi-aggressive or nip fins.The Slim betta can be semi-aggressive or nip fins.Both are comfortable at 24–28°C (75–82°F).A pH of 6.5–7.5 suits both.Minimum tank for the pair: 75 L (20 US gal)Side by sideSlim bettaCroaking gouramiAdult size10 cm (3.9 in)7.6 cm (3 in)Minimum tank75 L (20 US gal)75 L (20 US gal)Temperature24–30°C (75–86°F)22–28°C (72–82°F)pH6.5–7.56.0–8.0Hardness5–15 dGH (89–268 ppm)5–19 dGH (89–339 ppm)TemperamentSemi-aggressiveSemi-aggressiveCommunity tankGoodNot suitableCare levelEasyModerateDietOmnivoreOmnivoreSpecies profilesSlim bettaBetta bellicaCroaking gouramiTrichopsis vittata