HomeCompare fishGreen pufferfish vs Peacock gudgeon Green pufferfish vs Peacock gudgeon: can they live together? Verdict: With cautionThe Green pufferfish grows about twice as long as the Peacock gudgeon; watch for bullying or predation.Both are comfortable at 24–25.6°C (75–78°F).A pH of 7.5–7.8 suits both.Minimum tank for the pair: 190 L (50 US gal)Side by sideGreen pufferfishPeacock gudgeonAdult size20 cm (7.9 in)7.6 cm (3 in)Minimum tank190 L (50 US gal)40 L (11 US gal)Temperature24–28°C (75–82°F)22–25.6°C (72–78°F)pH7.5–8.47.0–7.8Temperament–PeacefulCare level–EasyDiet–OmnivoreSpecies profilesGreen pufferfishTetraodon fluviatilisPeacock gudgeonTateurndina ocellicauda