HomeCompare fishPinktail chalceus vs Black phantom tetra Pinktail chalceus vs Black phantom tetra: can they live together? Verdict: Not recommendedThe Pinktail chalceus is aggressive towards other fish.An adult Pinktail chalceus is about 6 times the length of a Black phantom tetra and may eat it.Both are comfortable at 23–28°C (73–82°F).A pH of 6.0–7.5 suits both.Side by sidePinktail chalceusBlack phantom tetraAdult size25.4 cm (10 in)4 cm (1.6 in)Minimum tank210 L (55 US gal)75 L (20 US gal)Temperature23–28°C (73–82°F)22–28°C (72–82°F)pH6.0–7.56.0–7.5Hardness6–18 dGH (107–321 ppm)2–18 dGH (36–321 ppm)TemperamentAggressivePeacefulCommunity tank–ExcellentCare levelModerateEasyDietCarnivoreOmnivoreSpecies profilesPinktail chalceusChalceus macrolepidotusBlack phantom tetraHyphessobrycon megalopterus