In addition to the 6 fish you already have??
As to whether or not you should get the anemone, how long have you tracked stable parameters? General advice for nems is that they do better in a mature tank, one that has a good history of stable water chemistry. I don't know if your tank has been set up long enough to have that history.
Do a Google search to learn about the care requirements. Yes, this forum is for answering questions, but why should someone regurgitate what's already out there when you can find it yourself (and may come across answers to questions you haven't thought to ask yet)? ;)
Don't rush things this hobby is all about taking your time when stocking your reef. If you have a tank full of live rock you might get away with it but three months is young for adding anemones
While I totally agree with
@Nman in principle I think the encouragement to go slow isn't generally how reef addicts behave. We are like the homeless persons who when asked if they want a hotel room for a week or a dime bag of crack for their pipe might think about the options for a minute but once they see the crack, it's crack now everytime. No judgement here applies to anyone other than myself in the above comment.
I also have a 55g that’s been up and running for 18 months or so. It’s not stocked with much, 2 clowns, 2 damsels, a goby and a hood amount of CUC.
Would that be that be a better choice?
Yes, an older tank seems to be better for successful additions of anemomes. Read about treating nems for sickness in other threads on here. Some of these are routinely medicated if one hopes to keep them alive for longer than a couple of months.
That does kind of look like a long tentacle anemone (Macrodactyla doreensis), to me too. They require a deep sand bed, at least 6 inches. BTAs on the other hand attach to holes or crevices in the live rock. BTAs are significantly easier to keep than LTAs. LTAs have clear spots that run along the column of the anemone and they also have a pinkish foot, which should be buried in the sand. If a LTA gets even a miniscule tear in the foot, as sometimes happens during collection or when removing from a dealers tank, the anemone is a goner. An infection invariably sets in and the anemone will succumb. On the other hand, BTAs are much more forgiving.
What are your tank parameters in both tanks and lighting?
I enlarged the picture and it might be a bubble tip or it might be something else. Not knowing should stop folks from impulsive purchases until they research the animal and are certain they can keep it long term, imo. Sadly, my experience is that we "go for the crack," as explained above. :thinking-face:
That said, when you do get a new anemone I would encourage you to catch the clown fish that are in the tank where the nem is going and put them all in an acclimation box together and force the clowns to "find" their nem before you put the nem in the tank.
Captive bred clownfish often have no experience with a nem and they need to be introduced to get them to make it their home. Once they have made it their home, they will tend it, nip at it, boss it around and use it as their toilet which all helps improve the likelihood that the nem will thrive. It also helps captive bred clowns understand their natural instincts to dive into wavy corals and nems and will keep your LPS corals safe from clownfish invasion which can be leathal to lps. :smiling-face-with-sunglasses:
It's gonna look cool in your tank. Post pictures when you get one, please.
