Meet our July Fish of the Month, the Cherubfish, Centropyge argi — a pocket-sized stunner that proves the best things really do come in small packages. Also known as the Pygmy Angelfish, this is the smallest angelfish in the tropical Western Atlantic, and one of the most beloved by divers lucky enough to spot one.
Survey Regions: Cherubfish are found throughout the Tropical Western Atlantic (TWA) survey region — from Bermuda and Florida through the Bahamas and Caribbean. REEF volunteers most often log them on deeper reefs and rubble slopes, where they tend to hang close to cover.
Size: Tiny — usually just 5–8 cm / 2–3 in. Don't let the small size fool you; that flash of electric blue and gold is unmistakable once you know what to look for.
Identifying Features: A deep, royal-blue body paired with a bright golden-orange face and chest, plus a thin blue ring around the eye. The contrast is striking and unlike anything else on the reef. Cherubfish are shy by nature, darting between ledges, rubble, and reef crevices, so a patient diver is often rewarded with the best views.
Fun Facts: First described in 1951, the Cherubfish belongs to the marine angelfish family (Pomacanthidae). Despite its angelic looks, it can be feisty — males defend small territories and harems on the reef. Its preference for deeper, rubbly habitat means it is easy to overlook, which makes every sighting feel like a little treasure hunt.
Cheer on the Cherubfish in the Fish World Cup! This little fighter may be small, but it punches well above its weight — the Cherubfish has already battled its way to the quarterfinals! Our Fish World Cup is heating up on Facebook and Instagram, where fan-favorite species from around the world face off and YOU decide the winners. Follow along, vote in every match, and help carry the Cherubfish through to the final. Most votes wins!
See the Cherubfish in the wild. Want to meet this little gem in person? It is the star of our Colombia Field Survey Trip, April 3–10, 2027, based in Santa Marta. Divers will explore Tayrona National Park, one of the Caribbean's most biodiverse underwater worlds, where the Sierra Nevada mountains meet the sea. Spaces are available — register today and email trips@REEF.org with any questions.