HomeCompare fishDwarf rainbowfish vs Glass catfish Dwarf rainbowfish vs Glass catfish: can they live together? Verdict: Not recommendedAn adult Glass catfish is about 3 times the length of a Dwarf rainbowfish and may eat it.Both are comfortable at 22–26°C (72–79°F).A pH of 6.5–7.0 suits both.Side by sideDwarf rainbowfishGlass catfishAdult size5 cm (2 in)15 cm (5.9 in)Minimum tank150 L (40 US gal)150 L (40 US gal)Temperature22–28°C (72–82°F)21–26°C (70–79°F)pH6.5–7.56.5–7.0Hardness8–18 dGH (143–321 ppm)8–18 dGH (143–321 ppm)TemperamentPeacefulPeacefulCommunity tankGoodGoodCare levelEasyEasyDietOmnivoreCarnivoreSpecies profilesDwarf rainbowfishMelanotaenia praecoxGlass catfishKryptopterus bicirrhis