big fish in a small pond
Definition from Wiktionary, the free dictionary
- (idiomatic) One who has achieved a high rank or is highly esteemed, but only in a small, relatively unimportant, or little known location or organization.
- Dr. Jones could get a professorship at an Ivy League university, but he enjoys being a big fish in a small pond too much to ever leave Hannover College.
one who has achieved a high rank in a small location