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2014年9月13日 星期六

20140913 mixing desjardini tang and chevron tang

Desjardini Tang and Chevron Tang
Today marks the two week point for my chevron tang's addition, one week point for the desjardini tang. As with all tang additions and mixing, I kept a constant eye on these two's interaction. The funny thing with the Chevron tang is that it wasn't very active and was quite picky on eating during its first week of stay. But the moment I put the slightly larger desjardini tang in, the chevron seemed to have "came alive". Not only it became very active to swim in the open, its appetite suddenly opened up and ate everything I fed from frozen, flakes, pellets, and nori.

The desjardinit tang was never a picky eater even when I asked the store to feed it prior to my decision to purchase. But it had remain very cautious of eating. It does eat everything I feed, but only after a couple minutes observing others eat then it will join.

The two had some sparks during its first day of introduction. Desjardini raised its dorsal and anal fins to maximize its size while the two size up. Finally the desjardini found a nice little corner to settle and guarded it pretty well. No one can get close to the strong hold in the next few days.

I noticed the desjardini tang is hiding a lot whenever I want to observe it. I also continue to observe the slow to eat habit. So I hid in a corner and observe the tang's behavior to determine whether the tang is hiding from other tank mates or from me. Fortunately for it, the fish was hiding from me, which is unfortunate for me. So my next attempt is to spend more and more time in front of the tank, and reward them with food whenever they come out of hiding- in hopes to draw a more positive impression of me rather than all the traumatic experiences- captured, transported, and captured again, and transported again, gets tossed, captured... all by human.

2014年9月6日 星期六

20140906 New Tankmate: Desjardini Tang

Zebrasoma Desjardinii- The Desjardini Tang, aka Red Sea Sailfin Tang, has also been on top of my list of jeweled fish to keep. The problem is- I have already had a yellow tang, and knowing if I add a desjardini tang into the same tank, I will be picking out a dead body sooner or later, I never did.

About three weeks ago I placed a special order request for this fish at a local fish store- Living Art Aquarium. But two weeks later, instead of waiting for this tan, you probably recall I picked up a chevron tang (Ctenochaetus hawaiiensis) instead. I figured this fish is new, but somewhat established, plus the desjardini is nearly 5" (I asked for 3-4", but 5" is still OK) whereas the chevron is barely 3". I thought it would be a good timing to add this fish. And then, the funny thing happened...

During the first week of my chevron tang's addition, I had barely got this fish to begin accepting pre-soaked, soften flake food but rejects most all other food, including frozen. The chevron also spends much time hiding yet instead of patrolling. But the moment I added this desjardini, the chevron became very territorial and patrols all open areas of the tank (with the orange spotted rabbitfish as its deputy). The chevron also immediately begin to accept flake of all sizes, frozen, as well as nori pieces- as a show to demonstrate who's the boss!

The Desjardini, in the midst of all these domination demonstration, didn't seem too bothered since it's almost 2" larger than the little chevron. And it began to accept flake, frozen, and nori right away as well! And unlike chevron's introduction, the flame back angel didn't even bother to confront this big guy.

2014年6月1日 星期日

2014-06-01 Species Spotlight- Desjardini Tang

Tangs, or surgeon fish, are among the most popular for community reef tanks. Not only most of them do not grow of an exceedingly large size, they are beautiful, mostly hardly, and also utilitarian since they are algae grazers in nature and does not harm invertebrates or corals.

If one asks for my opinion on the most beautiful tang in the world, there is no doubt my answer will be Desjardini Tang (Zebrasoma Desjardini), also known as the Redsea Sailfin tang.
Desjardini Tang
They can sometimes be confused with their closely related cousin, the Sailfin Tang (Zebrasoma Veriferum). However, upon close examination, you can see they are distinctively different, especially as they age. Here are a couple links to general information and a sample photo for comparison:

Like all other tangs in the Zebrasoma family, this fish is very hardy, active, and display lots of personality. However, you should also follow the general rule for tangs- do not keep multiple of them unless they are introduced at the same time, and also that there is adequate room for multiple- which comes the catch for this fish- they get BIG.

Among the commonly available surgeon fish for sale in the North American aquaria, this fish definitely ranks among the top 5 in adult size (among the larger tangs in the trade: Vlamingi, Naso, Sohal, Clown, and Orange Shoulder Tangs) The Desjardini Tang can reach up to a foot and a half in length. And when this fish fully extends its dorsal and anal fins, it is the tallest Tang in the trade (see illustration below)
zebrasoma desjardini

For the sake of its size, please do not consider housing this fish unless your tank is at least 120Gallon (with lighter bio load), and no smaller than 180 gallon if you plan a fish-packed tank.
Besides full-reef quality water parameters, you must also provide ample vegetable matter for this herbivore to dine on (warning, you might hear many reef hobbyists suggest clipping terrestrial vegetable such as lettuce for tangs to eat, this might actually harm them as land vegetables are far less nutritious in the amount of mineral and amino acid their marine counterparts contain). 
Also you do not need to spend big money purchasing marine algae to clip on like this: http://www.drsfostersmith.com/product
Just visit a local Asian grocery store and puchase the Nori (seaweed) sheets used for sushi wraps. It's the exact same stuff but 10 times cheeper.

2013年2月5日 星期二

Good morning bunny!

The blueline rabbitfish in my 92 corner reef is one of the most boldly beautiful fish. However, when the tank is being disturbed (i.e. cleaning, feeding, rearranging, etc) she is also the first to disappear. Seen in this photo, all i did was stick my camera towards the glass and it is attempting to hide behind the toadstool. My point is, rabbitfish has a general shy personalitu since they are herbivours( lots of nori in their diet) they fall prey to many others in the wild. So if you have one or planning to have one, gentle and friendly tankmates and attitude towards this beauty is the beat way to go. Oh, and if you are not gentle with it, their dorsal fin is equipped with a venom spine that can inflict quite a painful wound on the handler