Maybe one of these?? It's a long shot though
https://www.mangago.me/read-manga/orca_mansion/
https://www.mangago.me/read-manga/hey_aquarist/
https://www.mangago.me/read-manga/kingyo_no_ubugoe/
https://www.mangago.me/read-manga/hans_and_emily/
https://www.mangago.me/read-manga/a_fake_marriage_at_the_goldfish_shop/
https://www.mangago.me/read-manga/koi_ni_mo_naranai/
Oh, wait you said manhwa? My dumb ahh, I just read ur question again. All of these are manga. I couldn't find anything for manhwas
**most, there's like two manhwa in there
no, it’s not unfortunately :( but thank you so much though these look like such great picks for my next read
hi! does anyone happen to know a manhwa with a koi or goldfish on the cover? it’s a really sweet, short romance story and i think it might be a retelling of cinderella… but i’m not totally sure the only thing i can clearly remember is the fish on the cover :’)