Wow...I disagree with a lot of the advice being given out in this thread. I'm surprised no one has said anything yet. I just saw this thread for the first time tonight.
First, despite what many websites say, I really disagree with classifying clown gobies as good "beginner" fish mostly due to the challenge of getting them to eat at first.
How many you can keep together depends on the tank size. In smaller tanks they should be kept alone or in mated pairs, but in larger tanks, such as a 55g, I've never had any issues with keeping like 10-15+ together. In nature they live in groups of 10-20. Clown gobies can change their sex. When two males are paired, the smaller male becomes the female and when two females are paired, the larger of the two becomes the male. Additionally I have never had issues with mixing different types of clown gobies. I've seen greens, yellows, and blacks, kept together in small tanks with no issues and used to have a green and yellow together in one of my old tanks.
I really would not recommend feeding clown gobies blood worms. They aren't very nutritious and is not a natural food source for them. Clown gobies are planktivores, so yes, the cyclopeeze would be a good option in addition to brine shrimp and if you are going to feed mysis, chop it into smaller pieces or get "mini-mysis" which is made by the company H2O life I believe.
QUOTE (Nanobuds @ May 6 2009, 02:50 PM)

If you catch yours eating some SPS polyps, just flick them away.
Are you serious?
NEVER FLICK A FISH or even flick at them. That is very stressful for them.
QUOTE (Nanobuds @ May 6 2009, 02:50 PM)

Some usually starve in tanks if they are used to feeding on SPS only, and arent accustomed to basic aquarium foods. However, they are really easy to get eating prepared foods
I don' think you can say they usually starve
just because they are used to feeding
only on sps polyps, as that is not necessarily the truth. They eat meaty foods (plankton) in the wild as well sps polyps.The main reason clown gobies starve in tanks is due to the fact that by the time they get to the fish store, they are so emancipated and stressed out that they wont eat. People buy them unsuspecting and then suddenly the goby dies a few days to a week later. Another reason to always ask a fish store employee to feed a fish so you can observe it eating before you buy it.
Clown goby reproduction in captivity is not rare, they do it all the time. It's just not easy, as is it with any marine fish, to raise the fry.
Also, please don't tell people to buy fish at Aqua Con. Their website is littered with inaccurate horrible advice. Not to mention, a simple search of the vendor & trader feedback forum will give you plenty of reason to go somewhere else.
QUOTE
QUOTE (MadWorld @ Jun 18 2009, 02:22 PM)

Alright, they are both eating now lol. They are taking in everything, flakes, pellets, etc.
But one thing, are they "immune" to anemones?
I have some aiptasia around the tank, and i dont want them to get killed from them.
QUOTE (Nanobuds @ Jun 19 2009, 02:26 PM)

yes
QUOTE (MadWorld @ Jun 21 2009, 04:09 PM)

So, can they "host" anemones?
QUOTE (Nanobuds @ Jun 21 2009, 06:10 PM)

MadWorld - Yes
Absolutely false. Clown gobies are not immune to anemones and the anemone will sting, kill, and eat the goby if it attempts to host it. This is one thing to be very aware of when putting clown gobies in a tank with anemones. Their love for perching often gets them killed with an anemone in the tank.
This thread needs some work and if you're going to give others advice, please make sure you know what you're talking about. Just posting a bunch of stuff you've rephrased from other fish sites is not a substitute for having years of hands on experience with these fish.