HomeCompare fishCascarudo vs Emerald catfish Cascarudo vs Emerald catfish: can they live together? Verdict: With cautionThe Cascarudo grows about twice as long as the Emerald catfish; watch for bullying or predation.Both are comfortable at 22–28°C (72–82°F).A pH of 5.8–8.0 suits both.Minimum tank for the pair: 210 L (55 US gal)Side by sideCascarudoEmerald catfishAdult size18 cm (7.1 in)8 cm (3.1 in)Minimum tank210 L (55 US gal)75 L (20 US gal)Temperature18–28°C (64–82°F)22–28°C (72–82°F)pH5.8–8.35.8–8.0Hardness0–30 dGH (0–535 ppm)2–30 dGH (36–535 ppm)TemperamentPeacefulPeacefulCommunity tank–GoodCare levelEasyEasyDietOmnivoreOmnivoreSpecies profilesCascarudoCallichthys callichthysEmerald catfishBrochis splendens