HomeCompare fishDemon eartheater vs Green terror Demon eartheater vs Green terror: can they live together? Verdict: Not recommendedThe Green terror is aggressive towards other fish.Both are comfortable at 23–24°C (73–75°F).A pH of 6.5–7.0 suits both.Side by sideDemon eartheaterGreen terrorAdult size25 cm (9.8 in)23 cm (9.1 in)Minimum tank210 L (55 US gal)210 L (55 US gal)Temperature23–28°C (73–82°F)20–24°C (68–75°F)pH6.3–7.06.5–7.5Hardness5–10 dGH (89–178 ppm)4–20 dGH (71–357 ppm)TemperamentPeacefulAggressiveCare levelModerateEasyDietOmnivoreOmnivoreSpecies profilesDemon eartheaterSatanoperca jurupariGreen terrorAequidens rivulatus