Kai The Fish Guy

Kai The Fish Guy

@kaithefishguy.bsky.social

Dr Yi-Kai Tea | Ichthyology Curator, The Australian Museum Research Institute | Systematic ichthyology | Wildlife photographer | 🏳️‍🌈he/him

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Hi everyone. I felt really dejected for a long time about the state of science communication on Twitter, and was reluctant to give things a try on yet another new platform. I’m so touched by the support everyone has shown so let’s give this one last go, as KaiTheFishGuy on Blue Sky!

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First live photographs of what appears to be a new Hypochrysops taxon from the apollo species complex! Not previously recorded from the Maluku Islands, and not a known species/subspecies of anything from the region.

Trogonoptera brookiana, Rajah Brooke’s Birdwing. Malaysia’s national butterfly is quite a thing of beauty. Its black wings with emerald green feather-like markings, bright red head, and blue wing accents isn’t even its most remarkable feature. It’s probably the fact that it measures close to 15 cm

PhD opportunity: I am looking for a PhD student to study taxonomy and systematics of labrid fishes and other coral reef taxa. Successful applicants will be jointly based at the University of Sydney and the Australian Museum Research Institute.

This is one of the most exciting loans I’ve ever unpacked. There are only seven specimens of Prognathodes guyotensis known from collections worldwide; three specimens in the type series, all from the Kyushu-Palau Ridge, and a further four from scattered localities across the Indo-Pacific.

Last weekend I was fortunate to encounter two female Yellow Jewel butterflies (Hypochrysops byzos) along a creek line about 45 minutes from Canberra. This is a very elusive and one of the more difficult of the Australian Jewels to find, so finding bro one but two was an extra special treat.

Hypochrysops delicia, the Moonlight Jewel I’ve spent many unsuccessful summers over the last few years trying to find this species around the Sydney area. Turns out they’re around, but only at the top of the tallest peaks, in the furthest corner of the Blue Mountains, and only appear after 4 pm.

Cirrhilabrus hygroxerus, the Monsoon Fairy Wrasse Two in two days! I’m feeling generous. Ok I’m gonna speed run this one. Hygro = wet Xeros = dry Wet + dry = monsoon = weather profile of Darwin = type location of this species

Cirrhilabrus bathyphilus, the “Deepwater Wrasse” This is a really beautiful species native to northeast Australia, New Caledonia, and southern Vanuatu. It belongs to a small lineage of very distinctive fairy wrasses with only two other species.

The species name “bathyphilus” literally translates to “love of the deep”, in reference to its preference for deep reefs. Ironically, while it does live in fairly deep coral reefs (up to 90 m), it does not hold the record for the deepest dwelling fairy wrasse.

How’s this for a STUNNER! Cirrhilabrus cyanogularis, the Blue-throat Fairy Wrasse! I described this species in 2018. One of the most beautiful fairy wrasses. This one is native to only a small part of the Coral Triangle, namely southern Philippines and northeast Borneo.

Today’s #EtymologyEpithet is a double whammy! The first is Pseudojuloides Pluto from Ogasawara, Wake Atoll, and the Mariana Archipelago. The specific epithet is given after Pluto, god of the underworld, in reference to the sinister coloration of the males.

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Today’s #EtymologyEpithet is a double whammy! The first is Pseudojuloides Pluto from Ogasawara, Wake Atoll, and the Mariana Archipelago. The specific epithet is given after Pluto, god of the underworld, in reference to the sinister coloration of the males.

The second is Pseudojuloides proserpina, endemic to Fatu Hiva, Marquesas, and is known only from the male holotype. The female is not known. The name is given after the goddess of the underworld, in reference to both its close relationship to P. pluto, as well as its haunting colouration.

Kai The Fish Guy reposted

Nemateleotris lavandula Tea & Larson, 2023 “…named lavandula, after the genus of flowering plants which includes the ornamental herb lavender, in reference to its beautiful colouration in life.” Location: Palau 🇵🇼 #FishFriday #EtymologyEpithet

The beautiful Cirrhilabrus aquamarinus, the Chin-strapped Fairy Wrasse. I named it after the ludicrous aquamarine blue of the males, a very unusual colour for this genus. The common name refers to the collar of dark scales around its gill cover.

Christmas is around the corner and for years I’ve advocated that THIS fish should be the official FISHMAS mascot. The Peppermint Angelfish, Paracentropyge boylei, is a deep water coral reef species endemic to French Polynesia. Does it not look like a peppermint candy cane? #TeamFish

It’s been a crazy couple of hours on BlueSky! I’ve felt more invigorated on here than I’ve ever been in the last two years on Twitter. I’m so glad I made the change. Enjoy this gorgeous Pomacanthus navarchus, the Majestic Angelfish. I photographed this on my recent trip to Raja Ampat.