harlequin fish Directory References Images Discover 7 Everyday English Idioms and Where They Come From 10 Famous Artworks by Leonardo da Vinci Is Australia an Island? New Seven Wonders of the World 12 Greek Gods and Goddesses 7 of History's Most Notorious Serial Killers 10 Greatest Baseball Players of All Time Contents harlequin fish tropical fish Ask the Chatbot a Question Ask the Chatbot a Question Also known as: Rasbora heteromorpha Learn about this topic in these articles:description In rasbora…the most popular being the harlequin fish, or rasbora (R. heteromorpha), a reddish fish 4–5 cm (1.5–2 inches) long with a wedge-shaped black spot on each side.Read More