HomeCompare fishSlim betta vs Eel Loach Slim betta vs Eel Loach: can they live together? Verdict: Not recommendedThe Slim betta can be semi-aggressive or nip fins.An adult Eel Loach is about 19 times the length of a Slim betta and may eat it.Their preferred pH ranges don't overlap.Both are comfortable at 24–26°C (75–79°F).Side by sideSlim bettaEel LoachAdult size10 cm (3.9 in)190.5 cm (75 in)Minimum tank75 L (20 US gal)75 L (20 US gal)Temperature24–30°C (75–86°F)24–26°C (75–79°F)pH6.5–7.55.0–6.0Hardness5–15 dGH (89–268 ppm)5–12 dGH (89–214 ppm)TemperamentSemi-aggressivePeacefulCommunity tankGoodGoodCare levelEasyEasyDietOmnivoreCarnivoreSpecies profilesSlim bettaBetta bellicaEel LoachPangio anguillaris