Yes! A giant fish does justify going up a size. These Ocelifer (sp?) cats can get big. but they're headed for a 29 gallon. If they 1. All SURVIVE and 2. get too big, I'll either sell 3 or surrender them to my LFS.
4 bettas: Butch, 3-year-old violet male PK EE & 3 girls in a 30 gal sorority. I do not name the girls anymore! 1/2 of them die within a month.
30 gal: 9 Oto cats, 4 Ocellifer cats. Inverts: Cherry shrimp & 2 assasin snails.
10 gal.: Butch, his 5 oto cats, 3 assasin snails, and a few snails the assassins haven't caught.