HomeCompare fishFlag acara vs Threespot eartheater Flag acara vs Threespot eartheater: can they live together? Verdict: With cautionThe Threespot eartheater grows about twice as long as the Flag acara; watch for bullying or predation.Both are comfortable at 23–26°C (73–79°F).A pH of 6.3–7.0 suits both.Minimum tank for the pair: 210 L (55 US gal)Side by sideFlag acaraThreespot eartheaterAdult size8 cm (3.1 in)17 cm (6.7 in)Minimum tank75 L (20 US gal)210 L (55 US gal)Temperature22–26°C (72–79°F)23–28°C (73–82°F)pH5.2–7.56.3–7.0Hardness5–12 dGH (89–214 ppm)5–10 dGH (89–178 ppm)TemperamentPeacefulPeacefulCare levelModerateModerateDietOmnivoreOmnivoreSpecies profilesFlag acaraLaetacara curvicepsThreespot eartheaterSatanoperca daemon