@RatioTile what Antarctic fishes/invertebrates have Port of Nagoya kept in the past? When I visited they had (besides C. mawsoni) Bald Notothen Pagothenia borchgrevinki, Emerald Notothen Trematomus bernacchii, and Antarctic Krill Euphausia superba - 1 specimen each of the fishes and a small number of the krill. I'm also aware of a previous holding of Ploughfish Gymnodraco acuticeps - how long was that kept for, and how long has the aquarium been able to maintain other Antarctic fishes for?
@DaLilFishie In 2020 and 2022, I saw Ploughfish (Gymnodraco acuticeps), Black Rockcod (Notothenia coriiceps), Emerald Notothen (Trematomus bernacchii), a larger number of Antarctic Krill (Euphausia superba), and the nemertean worm Parborlasia corrugata.
I found these articles from the aquarium's website (in Japanese) about this fish - it was collected at 40 metres depth (significantly shallower than previous reports of this species) by the 65th Antarctic Research Expedition. It is the first specimen of its species brought alive to Japan (and, I'm presuming, the only live specimen outside of Antarctica). Transport from Antarctica to Japan took one and a half months, via Australia. Apparently, the fish readily settled into its exhibit in Nagoya.