HomeCompare fishGlass catfish vs Crescent betta Glass catfish vs Crescent betta: can they live together? Verdict: With cautionThe Glass catfish grows about twice as long as the Crescent betta; watch for bullying or predation.Both are comfortable at 24–26°C (75–79°F).A pH of 6.5–7.0 suits both.Minimum tank for the pair: 150 L (40 US gal)Side by sideGlass catfishCrescent bettaAdult size15 cm (5.9 in)6 cm (2.4 in)Minimum tank150 L (40 US gal)40 L (11 US gal)Temperature21–26°C (70–79°F)24–30°C (75–86°F)pH6.5–7.06.0–7.0Hardness8–18 dGH (143–321 ppm)5–19 dGH (89–339 ppm)TemperamentPeacefulPeacefulCommunity tankGoodGoodCare levelEasyEasyDietCarnivoreOmnivoreSpecies profilesGlass catfishKryptopterus bicirrhisCrescent bettaBetta imbellis