HomeCompare fishAfrican bonytongue vs Freshwater butterflyfish African bonytongue vs Freshwater butterflyfish: can they live together? Verdict: Not recommendedThe Freshwater butterflyfish is aggressive towards other fish.The African bonytongue is aggressive towards other fish.An adult African bonytongue is about 9 times the length of a Freshwater butterflyfish and may eat it.Both are comfortable at 24–30°C (75–86°F).A pH of 6.7–7.5 suits both.Side by sideAfrican bonytongueFreshwater butterflyfishAdult size100 cm (39 in)11 cm (4.3 in)Minimum tank455 L (120 US gal)75 L (20 US gal)Temperature24–30°C (75–86°F)24–30°C (75–86°F)pH6.7–7.56.7–7.5Hardness4–12 dGH (71–214 ppm)2–10 dGH (36–178 ppm)TemperamentAggressiveAggressiveCare levelDifficult–DietCarnivoreCarnivoreSpecies profilesAfrican bonytongueHeterotis niloticusFreshwater butterflyfishPantodon buchholzi