Hello all! So I decided to get back into the hobby now that I had some disposable income. I found a great deal on a 100 Gallon glass tank, had the protein skimmer, lights, power heads, heaters ,canister filter, stand and all the accessories for feeding and tank maintenance for a $100. I couldn't say no. However when I got there not only did it have that, it included the inhabitant. I knew I was going to loose stuff because I wanted to start slow and do it right and now I was thrust into trying to keep everything alive. Tried my best, lost some stuff. Fast forward I got another 100 gallon cube, that had the holes for a sump (the first one did not). So I slowly built that one hopefully the right way. However I need help identifying what survived so I can research more on how to make it thrive instead of survive. Could use some help identifying these if possible. The little pink one was actually something that just popped up recently. No idea where it came from and not sure if I should terminate its exsistance.