I really want to keep one. The tank is only 8 months old. 120 gallon with a sump and I am in the process of building a 10 gallon fuge for it that should be going in tomorrow or Sunday. So l realize that it could be some time before I can get one but I'm wondering how long? Also I already have a tiger watchman goby and I'm wondering if they will get along? Anyone with experience keeping this species would be greatly appreciated thank you.