Hello is was just wondering if I could add yoyo loaches into a 20 gallon long. I will cycle it for 4 weeks (with neons) before adding. Some sights say I can, some say I can't. At this point I am unsure. If they stay 3 to 4 inches like some places suggest then I see no problem. I hear they are very similiar to cories in behavior and size and some people put cories in a 10. I would do 3 to 5 depending on what y'all think. I lile the way there body shape is and their activity level. If I can't do them than how do Otto compare to yoyos?