I've wanted a Greissenger Goby since I first saw one several months ago and the shop had already presold it but promised to give me first pick next time the shop got some in stock. Well, it turns out they just got two more today and if I want one I need to get it tomorrow (that's as long as they'll hold it for me before paying). The only problem is that apparently they're primarily pod and amphipod eaters which means it may be difficult to wean it onto other foods at first. I had planned to QT it to train it to eat frozen or pellets but there would be no pods in the QT tank so it would be pretty hungry if it didn't quickly take to the prepared foods. My 20 has plenty of pods and I could try to train it in there but my only concern is that nutrient buildup from uneaten food at first may harm the starfish in there. I guess I could put it in my 10 gallon (which sources say is big enough) which also has a pod/amphipod population and do more frequent water changes. If you were in my position what would you do? This is one of the first fish I've seen in a long time that really excited me so I do want it but don't want to jeopardize my stars or risk him starving...so my decision to make by morning is to place him in the 20 gallon, the 10 gallon which is the one with the chiller and corals, a QT tank for observational QT (no medications) just to try to train him to eat, or decide to not get one...