| The neon gobies are a cleaner type fish, similar to cleaner wrasses. They prefer eating gill flukes and parasites from your fish, although they can be shifted to prepared foods with little problems. In fact, these are now commonly captive raised, making them a much more durable choice to go with.
A tank that is 2 months old may still be a little too "new" for a fish that will concentrate feeding from the rock and sand. Although you see bug populations presently, there is little hope that they have "flourished" enough to populate the tank to required densities. A refugium will help ensure continued food if the main tank is depleted too quickly.
A note on the *30 gallon rule*, and that is that several LFS will try to tell you that it's not wise to try saltwater tanks under 30 gallons in size, no matter WHAT you try to keep in them. This is mainly for reasons of water and tank stability more than an actual "size" requirement for a particular fish. However, if you can overcome those obstacles, even your 15 gallon is more than suitable for swimming room for an adult rainsford goby. It's the food source I'd be most worried about, personally. While they CAN be coaxed onto other foods, the question is whether you can get that done before thier natural food source runs out.
Personally, I'd wait another month or two to allow the tank time to populate.
-HTH-
Cos |