Royal Gramma Aggressive?

keiferd

New member
Hello, I've had my 10G nano set up for a little over a month and I'm having problems with my newest addition of a Royal Gramma. The 1st inhabitant was a Yellow clown goby. I've had the goby for a few weeks now and I have still yet to see him eat anything. He actively swims around at night time hours but I have never seen him actually feed. I recently added a royal gramma and it seems to hate the goby. Actively charging it with an open mouth if decides to come out of hiding and perch in some star polyps. The clown goby is losing it's yellow color and is turning more of a pale peach. I'm afraid he will just eventually wither away and die from starvation or stress. I purposely bought the gramma over your standard damsel or clown because they claim to be very peaceful. Has anyone else had problems with Royal Gramma aggression?
 
They can be aggressive, especially in such a small space. I would take back one of the fish since it's not going to go well for your goby with the gramma attacking it. You might have better luck in a bigger tank, but with a 10 gal there is just not a whole lot of space for territories.
 
In my experience they pick a spot in the tank and defend it aggressively. In a large tank it's not an issue but they will take over a small tank.
 
I have a Royal Gamma in my 65g and when I first added it, it did the "charging with mouth wide open" for about 3 months. It would only do it if any of the other fish came near the rock it'd picked as home. It quickly learned that my Maroon Clown is the queen of the tank and settled down. I've had it without issue for about 2 years. I also have a Clown Goby, Coral Beauty, and a small Yellow Tang. It gets along with every one in the tank and as the other reefers before me mentioned, it's definitely a space issue in your situation.

That being said, consider a fish such as a small 6-line Wrasse for your set up. They are very peaceful, have great color and are easy to keep. Just a thought.
 
10 g is very small, better suited to the clown goby. You might add one of the smallest of the shrimp gobies, who burrow, but another free-swimmer, no. A six-line wrasse is aggressive with any smaller fish, more so than much larger wrasses.
 
I had one in my tank for a couple of weeks before adding some blue/green chromis. He promptly started charging them open mouthed for the first couple of days any time they came to "his side" of the tank...

On a good note though, since the new fish have been in the tank, the Gramma has been out way more often.
 
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