Clown Killifish in 3 Gallon?

OK, so I know that this is a controversial question, and 3 gallons is small, I'm well aware of that. But I've seen older posts here recommending clown killifish for tanks as small as 2.5 gallons or so, and wasnt sure if that was fine, outdated wisdom, or an objectively bad idea?

For context I have a heavily planted 3 gallon with neocaridinia and amano. When I saw those older posts recommending clown killis, I'll admit I was tempted, but wanted to run it by the hive mind, whether it's a good or (probably) bad idea? Thank you!