is a jellyfish a fish?
316683
Jellyfish are not really fish, of course, because a fish's anatomy is centered around its backbone, whereas the jellyfish is a dome-shaped invertebrate. ... The cnidocytes on jellies' tentacles discharge venom from a sac called a nematocyst. These help them to capture floating prey in the water column.
264024
The beautiful Japanese swallowtail angelfish is one of the few truly reef tank safe angelfish as it does not bother corals or other invertebrates. The swallowtail angelfish is a mid-water column fish, meaning that in the wild it does not live on the reef nor near the surface.
1402767
A tiny jellyfish named Turritopsis dohrnii is capable of living forever, Motherboard reports. Only discovered in 1988, the organism can regenerate into a polyp—its earliest stage of life—as it ages or when it experiences illness or trauma.
1417276
These include, sea nettles, moon jellies and jellyfish. The jellyfish found in this class are dubbed "the true jellyfish". ... Yes, they have sac shaped bodies and long tentacles that sting painfully, but they are still structured differently than those organisms of Class Scyphozoa.
1206477
No the jellyfish are not real! Jellyfish are all glass, the glass is heated up to 2500 degrees then hand blown into paperweights to look like a jellyfish. ... Jellyfish are naturally phosphorescent, one of the reason we infuse phosphorus into the glass blowing process.
524811
The Irukandji Jellyfish indeed is a endangered species, and the only reason is the: Climate Change!!!!!!!
586915
The jellyfish is a carnivorous animal and despite its appearance, the jellyfish is a remarkably efficient predator. ... Jellyfish prey on all kinds of aquatic animals such as small fish, eggs and invertebrates along with anything else that gets stuck in their tentacles.
570165
Although the word is mentioned in their name, jellyfish are not fish. A group of jellyfish is called a 'bloom', 'swarm' or 'smack'. ... Jellyfish use their tentacles to sting. Most are harmless to humans but stings from some species, such as the box jellyfish, can be very painful and sometimes kill.
630778
Predation. Other species of jellyfish are among the most common and important jellyfish predators. Sea anemones may eat jellyfish that drift into their range. Other predators include tunas, sharks, swordfish, sea turtles and penguins.
1167303
Can a jellyfish sting when it is dead? ... But - dead or alive - if their tentacles are wet, jellyfish can still sting. "So long as it's still hydrated, even if the jellyfish isn't alive, the sting cells can still fire off," said Dr Richardson.
680870
They're low in calories and fat, and rich in protein and collagen. The little fat it contains is the essential omega-3 and omega-6 unsaturated fatty acids. About 25 to 30 species of jellyfish in the world are edible, including a few in Australian waters.
1056771
Most jellyfish are short lived. Medusa or adult jellyfish typically live for a few months, depending on the species, although some species can live for 2-3 years in captivity. Polyps can live and reproduce asexually for several years, or even decades. One jellyfish species is almost immortal.
135154
No, jellyfish like other primitive animals like anemones, sponges and coral don't feel pain because they lack a brain and a central nervous system. They have a rather primitive simple nervous system.
435306
Because their body is 95% water, they are perfectly camouflaged. The body of a jellyfish exhibits radial symmetry and is divided into three main parts: the umbrella, the oral arms (around the mouth) and the stinging tentacles. They have an internal cavity, in which digestion is carried out.
354850
In the adult, or medusa, stage of a jellyfish, they can reproduce sexually by releasing sperm and eggs into the water, forming a planula. ... It is this form that grows into the adult medusa jellyfish. The jellyfish sting actually comes from tiny nematocysts, or stinging cells, on the jellyfish body.
308262
Organisms such as jellyfish and others are considered plankton when they are very small and swim at low Reynolds numbers, and considered nekton as they grow large enough to swim at high Reynolds numbers.
1144828
Other species of jellyfish are among the most common and important jellyfish predators. Sea anemones may eat jellyfish that drift into their range. Other predators include tunas, sharks, swordfish, sea turtles and penguins.