Date: 19/06/2021 03:26:41
From: mollwollfumble
ID: 1752909
Subject: Aquarium Jellyfish Turns Out to Be Undescribed Species

(quote=PermeateFree)
Aquarium Jellyfish Turns Out to Be Undescribed Species

The newly characterized “elegant jellyfish,” roughly the size of a human hand, had been on display in two aquariums in Japan for more than a decade.

The world now has one more species of named jellyfish and it’s been hiding right under scientists’ noses for more than a decade. Tima nigroannulata, the species formally described in a June 8 paper in Zoological Science, was mistaken for a closely related cousin until genetic analyses revealed otherwise.

When the animals, nicknamed elegant jellyfish, were initially collected off the coast of Japan, they were assumed to be T. formosa, a species that lives in northern Atlantic waters. Researchers had even kept the animals alive and reproducing for more than 15 years at two public aquariums in Japan with the label T. formosa. Their uniqueness was only revealed when DNA sequencing of the animals’ tissues, completed at Hawai‘i Pacific University, did not match any known species.

A fully grown adult is about the size of a human palm, with an umbrella (also called a bell) that is between 23 and 46 millimeters in diameter and 12 to 38 mm tall. The bases of T. nigroannulata’s 53 tentacles fluoresce under a blacklight, but it is not yet known if it has the same bioluminescent capabilities as some others in the genus. So far, they’ve only been found in temperate waters (roughly 20 °C).

Each elegant jellyfish has granules of pigment around the base of its umbrella, creating a black ring of spots, and in some cases, those freckles extend to the top of its tentacles. In fact, the species name nigroannulata is derived from the Latin words for black and ring: niger and annulus, respectively.

https://youtu.be/XLV0-4kubYI
Aquarium Jellyfish Turns Out to Be Undescribed Species

https://www.the-scientist.com/news-opinion/aquarium-jellyfish-turns-out-to-be-undescribed-species-68907

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Date: 19/06/2021 11:45:20
From: Bubblecar
ID: 1752962
Subject: re: Aquarium Jellyfish Turns Out to Be Undescribed Species

>Researchers had even kept the animals alive and reproducing for more than 15 years at two public aquariums in Japan

Wonder what they feed them.

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Date: 19/06/2021 11:47:54
From: Tamb
ID: 1752964
Subject: re: Aquarium Jellyfish Turns Out to Be Undescribed Species

Bubblecar said:


>Researchers had even kept the animals alive and reproducing for more than 15 years at two public aquariums in Japan

Wonder what they feed them.


Prolly whale.

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Date: 19/06/2021 13:50:04
From: Kingy
ID: 1753002
Subject: re: Aquarium Jellyfish Turns Out to Be Undescribed Species

Bubblecar said:


>Researchers had even kept the animals alive and reproducing for more than 15 years at two public aquariums in Japan

Wonder what they feed them.

Corroboree Frog dip.

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Date: 19/06/2021 15:41:58
From: mollwollfumble
ID: 1753056
Subject: re: Aquarium Jellyfish Turns Out to Be Undescribed Species

Bubblecar said:


>Researchers had even kept the animals alive and reproducing for more than 15 years at two public aquariums in Japan

Wonder what they feed them.

“Moon Jellyfish can be fed live baby brine shrimp or frozen brine shrimp, rotifers or mysis. Live baby brine shrimp is their favourite food.”
Apparently, “mysis” are shrimp-like creatures.

“Freshwater jellyfish prefer to eat live brine shrimp, daphnia or other small water creatures. Occasionally jellyfish will also eat smaller fish, such as guppy fry or other baby fish.”

“We don’t know of anyone who has succeeded in breeding freshwater jellyfish in an aquarium”.

> Prolly whale.

The irukandji jellyfish in your tank might enjoy minced human.

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