Sorry my mom & brother just call the fish Rosies. After taking a new photo of my youngest I really think it’s a boy so I’ve renamed it Bowie. The smallest fish is smaller than my female but the fins are growing bigger.Rosie what? Tiny loaches come to my mind first, lol. But there are barbs & tetras, maybe minnows (rosy reds I think) & other species/genera with that common name.
You need to up your name game girl! JK... in a way... There are no other Dempseys than yours, some names are like that. But common names can be "too common" & we might not know what you mean. What fish did you mean?