HomeCompare fishSpotted ctenopoma vs Head-and-taillight tetra Spotted ctenopoma vs Head-and-taillight tetra: can they live together? Verdict: Not recommendedThe Spotted ctenopoma is aggressive towards other fish.An adult Spotted ctenopoma is about 3 times the length of a Head-and-taillight tetra and may eat it.Both are comfortable at 22–25°C (72–77°F).A pH of 6.0–8.0 suits both.Side by sideSpotted ctenopomaHead-and-taillight tetraAdult size15 cm (5.9 in)5 cm (2 in)Minimum tank210 L (55 US gal)75 L (20 US gal)Temperature5–25°C (41–77°F)22–26°C (72–79°F)pH6.0–8.06.0–8.0Hardness5–12 dGH (89–214 ppm)5–19 dGH (89–339 ppm)TemperamentAggressivePeacefulCommunity tankGoodExcellentCare levelEasyEasyDietCarnivoreOmnivoreSpecies profilesSpotted ctenopomaCtenopoma acutirostreHead-and-taillight tetraHemigrammus ocellifer