Since there seems to be a question of whether you can keep a Diamond goby alive by just feeding it or does it require a 300 gallon tank with a 2" sand bed? Maybe people can post how long they have had thiers and in what size tank?
I told you about my first two in my 300, I also have a pair in a 65g and all eat fish food when I feed. I did buy one once and it did not make a week before perishing. I feed PE Mysis, Spirulina Brine, and Mini Mysis.