Well it depends... Yes you are Deffiently right, they are not appropriate in a public Aquariam but in a small private one in your home certain triggers and puffers can be extremely affectionate to their owners. Yousuf89 didn't say he was specifically referring to touch pools in public areas so don't immediately try to insult me when you don't know all the ins and outs of what I meant.
It wasn't ment as an insult. I was only warning against your highly risky suggestion. If you don't want that to happen please consider following the recommendation in the first paragraph of my previous post, especially when we're talking about direct contact with potentially dangerous animals.
The name of the thread is "animals used for touch pools". A touch pool is quite clearly not a small personal aquarium and we're on a site called zoochat, not "my personal aquarium". If in the future you're responding to something else than the actual question posted in the thread, please say that clearly and we can avoid any misunderstandings.
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aren't all sea anemones are venemous
I mean what kind of sea anemone that isn't venomous to humans?
well other than the giant green anemone (Anthopleura xanthogrammica)
(well that's I heard of I think)
All are venomous, including the giant green, but most sea anemone species are harmless to humans, either because their cnidocytes ("singing cells") are too small to penetrate human skin or because the venom has no effect on humans.
The reason giant green's are sticky to touch is because they fire their cnidocytes into our skin, but it usually doesn't have any serious effect. A few people are more susceptible and/or thinner-skinned and can feel a slight burn when touching this species, and most who touch their eyes or lips after touching it will feel a burn too. Another reason it is important to wash your hands after a touch tank. Giant green and other species of
Anthopleura are frequently used in touch displays because they're generally pretty harmless, large in size and able to withstand fluctuations in temperature (although they prefer cold water). Most other large species that are essentially harmless are far less tolerant of temperature fluctuations (e.g.
Metridium strictly require cold water). Interestingly both
Actinia and
Urticina seem to be more random. I have freely touched several species in either genus without ever feeling anything, but two of my friends react instantly. That obviously means they're risky for touch tanks, even though
Urticina along with
Cribrinopsis sometimes are included (both are intolerant of warmer water, unlike
Actinia).
Unfortunately, most of the large sea anemones that tolerate tropical temperatures are entirely unsuitable for touch displays (
Actinodendron,
Cryptodendrum,
Dofleinia,
Phyllodiscus,
Stichodactyla, etc). I've seen
Heteractis [
Radianthus] in tropical touch tanks, but that is very risky as I know aquarists who've been seriously tagged by it.