WATCH: Mandarin Dragonets Spawning In The Wild

The Mandarin dragonet (Synchiropus splendidus) is one of my favorite fish, and I know I’m not alone. Mandarins are a fan favorite when it comes to saltwater aquariums for their vibrant psychedelic patterns and friendly personalities. So when the team…

Reef Builders Travelogue, Bunaken National Park, Sulawesi Indonesia

Reef Builders Destination Sulawesi Indonesia Here at Reef Builders we are fortunate to dive some of the worlds most lush and vibrant coral reefs, so last year we decided it was time to invite our readers along for the journey.…

Hotspot Of Bicolored Plate Corals Has A Very Cool Explanation

Humans have a special affinity for living things that are bicolored, and we especially love it when we see striking two-tone coloration in corals. For some of these specimens, genetics are at work, and for others we collectively believe that…

UPDATED: Reef Builders Destination: North Sulawesi Indonesia Aug 10th – 20th
Join us in Sulawesi Indonesia as we explore the Island's Northern Coast. Get ready for an unforgettable experience with the Passport to Paradise Reef Builders Destination. This eleven-day itinerary allows us to visit all of North Sulawesi’s amazing underwater diversity. We…
How is this elegance coral even real?

Elgance corals, Catalaphyllia jardinei, come in a myriad of beautiful colors and patterns but ‘Red Elegance Coral’ has never been in our vocabulary fro this iconic coral species. However a new crop of pictures of this coral from central Indonesia might put…

Sulawesi coral shipments are bringing new treasures from the Coral Triangle

Sulawesi corals are about to pick up where Borneo corals left off, we hope. A couple years ago there was some efforts to get Borneo corals into the aquarium trade, and that hasn’t panned out yet, but now Sulawesi corals may become…

Jaw dropping time-lapse video of a shoal of invasive banggaii cardinalfish

About a month ago we posted this image by Tony Wu of a shoal of banggaii cardinalfish, Pterapogon kauderni, in Lembeh, Sulawesi where they do not natively occur. That post received some skepticism as to how many fish that single…

Pictichromis dinar, a new bicolor dottyback species from Sulawesi

Pictichromis dinar is a new species of Pseudochromis discovered in the Western Gulf of Tomini, Sulawesi, Indonesia. Although we’ve seen Pictichromis dinar in person on a couple occasions over the last 18 months, the species was only recently described by…