HomeCompare fishSpotted ctenopoma vs Dwarf rainbowfish Spotted ctenopoma vs Dwarf rainbowfish: 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 Dwarf rainbowfish and may eat it.Both are comfortable at 22–25°C (72–77°F).A pH of 6.5–7.5 suits both.Side by sideSpotted ctenopomaDwarf rainbowfishAdult size15 cm (5.9 in)5 cm (2 in)Minimum tank210 L (55 US gal)150 L (40 US gal)Temperature5–25°C (41–77°F)22–28°C (72–82°F)pH6.0–8.06.5–7.5Hardness5–12 dGH (89–214 ppm)8–18 dGH (143–321 ppm)TemperamentAggressivePeacefulCommunity tankGoodGoodCare levelEasyEasyDietCarnivoreOmnivoreSpecies profilesSpotted ctenopomaCtenopoma acutirostreDwarf rainbowfishMelanotaenia praecox