HomeCompare fishHead-and-taillight tetra vs Glass catfish Head-and-taillight tetra vs Glass catfish: can they live together? Verdict: Not recommendedAn adult Glass catfish is about 3 times the length of a Head-and-taillight tetra 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 sideHead-and-taillight tetraGlass catfishAdult size5 cm (2 in)15 cm (5.9 in)Minimum tank75 L (20 US gal)150 L (40 US gal)Temperature22–26°C (72–79°F)21–26°C (70–79°F)pH6.0–8.06.5–7.0Hardness5–19 dGH (89–339 ppm)8–18 dGH (143–321 ppm)TemperamentPeacefulPeacefulCommunity tankExcellentGoodCare levelEasyEasyDietOmnivoreCarnivoreSpecies profilesHead-and-taillight tetraHemigrammus ocelliferGlass catfishKryptopterus bicirrhis