HomeCompare fishGlass catfish vs Black ghost Glass catfish vs Black ghost: can they live together? Verdict: Not recommendedThe Black ghost is aggressive towards other fish.An adult Black ghost is about 3 times the length of a Glass catfish and may eat it.Both are comfortable at 23–26°C (73–79°F).A pH of 6.5–7.0 suits both.Side by sideGlass catfishBlack ghostAdult size15 cm (5.9 in)50 cm (20 in)Minimum tank150 L (40 US gal)210 L (55 US gal)Temperature21–26°C (70–79°F)23–28°C (73–82°F)pH6.5–7.06.0–8.0Hardness8–18 dGH (143–321 ppm)5–10 dGH (89–178 ppm)TemperamentPeacefulAggressiveCommunity tankGoodGoodCare levelEasyModerateDietCarnivoreOmnivoreSpecies profilesGlass catfishKryptopterus bicirrhisBlack ghostApteronotus albifrons