KaiTheFishGuy
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Kai is a systematic ichthyologist at The Australian Museum, Sydney. His research interests combine the use of cutting-edge next generation sequencing techniques with traditional methods of morphology to better understand the evolutionary history of coral reef fishes. He is a legacy ReefBuilders contributor, having previously written close to give hundred articles under his pseudonym LemonTYK.

Rare fish alert: The original hybrid Paracentropyge, and BlueHarbor unleashes teaser clips

It has been just less than a month ago when we broadcasted about the newest Paracentropyge hybrid to hit the scenes. Well we hope that’s still fresh in your minds, as BlueHarbor has just uploaded a video of the “original”…

Genicanthus bellus hybrid is a magnificent treasure from Bali

There are rare fish in this world, and then there are RARE fish; fish that are so remarkable that money cannot buy. This is the true treasure for any rare fish fanatic. While peppermint angels are hard to come by,…

Mango angelfish from Guam resurfaces after long hiatus

It has been awhile since any fish from Guam has made its way into the trade. Sans the small collection made by Joe Russo last year, this is the first time in a long hiatus that we’re seeing the reappearance…

Pseudojuloides kaleidos is a rare pencil wrasse from the Maldives

Pseudojuloides kaleidos is a beautiful species that hails from the Indian Ocean, and is seldom collected for the trade but the odd specimens sometimes appears from the Maldives. Like many of its cousins in the pencil wrasse genus (Pseudojuloides), it…

Marshallese multibar angelfish is the healthiest Paracentropyge we’ve seen

The multibarred angelfish (Paracentropyge multifasciata) is a stunning and widely offered little angelfish that captivates the hearts of seasoned and amateur aquarists.  This little heartbreaker is sadly, not easy to keep and often refuse to eat and waste away due to…

Digiman is back with a breathtaking new Liopropoma latifasciatum as well as a charismatic Sailfin Jawfish

Familiarity has made us jaded with the beautiful and charismatic genus – Liopropoma. L. carmabi and L. rubre were once the creme de la creme species that everyone were dying to own, but in recent years they have become more widely…

Ixa cylindrus is a spooky purple crab for your peaceful refugium

Ixa is a small genus of crabs with very unique characteristics that separate this group from most other. The grooves that meander around the carapace are characteristic for this genus, and gives the crabs a jig-saw like appearance. The species above…

Chrysiptera starcki: A tail of two damselfish

Chrysiptera starcki is a well loved damsel that commonly graces the aquarium of most hobbyist. The bright blue and yellow coloration is a trademark branding for most Chrysiptera, but it looks spectacular on C. starcki. Although often imported from Australia,…

The illusionary Chaetodontoplus niger photographed again in waters of Japan

Chaetodontoplus niger is the phantom of the angelfish world, being predominantly colored an inky black; sans the yellow and white caudal and ventral fins respectively. This fish is very elusive and rare, and is almost never seen, or photographed until last…

B-Box Aquarium teases with a short clip of Belonoperca pylei

The whimsical and cartoonish looking Belonoperca pylei has long been regarded as a straight up unobtainable “book fish”. In the past year or two however, we’ve seen a few being slowly drip-fed into the aquarium scene. While still out of…