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Old 10-22-2004, 10:08 AM   #1
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Killer Tang... Need Help Please!

Hi all...
Newbie here so please be patient. I set up my first saltwater fish only tank about 5 months ago and have been doing surprisingly well except for one thing. Some of my fish keep dieing. I presently have a Yellow Tang, two Blue/Green Chromis, a Horshoe Crab, and a few dwarf crabs and snails. I do 10-20% water changes every 2 weeks. I check my water chemistry frequently and its been looking good. I use tap water filtered thru a RO/DI filter. Over the last few months I've lost at different times a Yellow Eyed Tang, a Sailfin Tang, a Tassle Filefish, a Royal Gramma, and 3 False Percs. The Chromis are original to the tank and the Yellow Tang and Horshoe Crab have been with me for about 3 months. I can probably expect that some of my earlier losses were due to my own inexperience. But lately I've noticed that the Yellow Tang has been attacking and killing my more recent fish.... the Sailfin Tang and Tassle Filefish. The Yellow Tang is about 3 inches long and is a beautiful fish in my aquarium, but I don't like the fact that he's killing the other fish. What do you folks recommend? Should I trade him in and introduce a group of new additions at once? Are there any fish that should be safe from attacks? Will the Chromis also start this same behavior? Any suggestions would be greatly appreciated. I really enjoy my tank but would like to add some new fish that will survive.

Thanks,
John
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46 gal Bowfront
36 inch Coralife 192 watt Lunar Aqualight with a 10K & Actinic
1 Emperor 280 Bio-Wheel Filter
2 Hagen Aquaclear 802 Powerheads with Quick Filters
1 AquaC Remora Protein Skimmer
1 200 watt Heater
52 pounds of Live Rock
2 Blue/Green Chromis
1 Ocelaris Clownfish
1 Hairy Mushroom Coral
1 Scarlet Skunk Cleaner Shrimp
8 Dwarf Hermit Crabs
10 Turbo Snails
10 Margarita Snails
5 Cerith Snails
5 Bumblebee Snails
1 Queen Conch
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Old 10-22-2004, 10:40 AM   #2
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Yellow Tangs can be pretty aggressive, especially to other tangs. Tangs should be kept at about six or more, or only one. Also, Tangs are very territorial, and you haven't left much territory. 46 gallons is not enough for a single Yellow Tang, let alone a Yellow, Yellow Eyed, Sailfin, etc.
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Old 10-22-2004, 11:01 AM   #3
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The yellow tang is agressive and should be one of the last to be put in the tank. He'll be especially agressive towards a new tang -or anything resembling his body shape. I'll be adding a new tang to my current yellow soon, but when I do, I'll remove the yellow to the QT , re-arrange the rocks, and put the new fish in. Otherwise you might also be sure that any new tang is bigger than the yellow is.

Let us know what happens fro here.

And of course.... welcome to AA!
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Old 10-22-2004, 11:03 AM   #4
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Oh yeah. Corty's advise hit the nail on the head. 45g is kinda small for a tang, let lone more than one. I guess he was kinda pissed when you added another.
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Old 10-22-2004, 05:56 PM   #5
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Thanks for all the advice guys! But now that I have the Yellow Tang and he's well established in the tank what should I do? Get rid of him? Change the decorations around and add smaller fish that don't resemble him? Suggestions?

Also... what should be the largest fish and the quantity of fish that I should put into the 46 gallon tank?

Thanks again!
John
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46 gal Bowfront
36 inch Coralife 192 watt Lunar Aqualight with a 10K & Actinic
1 Emperor 280 Bio-Wheel Filter
2 Hagen Aquaclear 802 Powerheads with Quick Filters
1 AquaC Remora Protein Skimmer
1 200 watt Heater
52 pounds of Live Rock
2 Blue/Green Chromis
1 Ocelaris Clownfish
1 Hairy Mushroom Coral
1 Scarlet Skunk Cleaner Shrimp
8 Dwarf Hermit Crabs
10 Turbo Snails
10 Margarita Snails
5 Cerith Snails
5 Bumblebee Snails
1 Queen Conch
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Old 10-22-2004, 06:07 PM   #6
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He can stay for now if you like him, but he should be moved to at least a 55 gallon tank in the near future. These guys can get up to eight inches. If you do not plan on getting a bigger tank, I would return him now so that he can have a happy life in someone elses home.

If you do keep him for now, the best way to add new inhabitants are to do exactly what you suggested, change around the decorations and add fish that are not Tangs. You will still want to keep an eye on him, as Yellow Tangs are known for being aggressive.

You have a decent selection of fish available for a 46 gallon tank, and a decent selection that will get along with your Tang (provided the decoration moving works).

For some ideas, you can always check out LiveAquaria: http://www.liveaquaria.com/product/categ.cfm?pcatid=15

They have some decent stats and pictures to give you an idea of what you're getting. More research is usually needed after, but it's a good base. They also have a compatability chart, but I've found that to be about 85-90% reliable, so make sure to double check (as you would anyway).

Good luck with your fishies :]
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Old 10-22-2004, 08:07 PM   #7
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I think you should take the tang back. Keep with fish suitable for that tank size. Aggression can be counterbalanced with a bigger tank, but nothing you are gonna do is going to keep this fish content/amused for long without it resorting to aggression due to the fact the tank is so small.
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Old 10-22-2004, 10:21 PM   #8
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A 46 gal Bowfront is small for a tang, they need swimming room, they also need the room because they can be territorial.
The Tasseled Filefish get to 12 inches, its another fish that gets to big for your tank.
You may want to stay away from Tangs, Filefish & Triggers, you may be able to get a wrasse. They are beautiful fish, I wish I could suggest a wrasse to you but I only have Bird Wrasses and they get big.

Can they have wrasses or a couple of wrasses in a 46 Bow Front?

Kaye
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Old 10-24-2004, 12:25 AM   #9
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I dissagree on the aggressiveness of a yellow tang... I have one that is very very peaceful... not at all territorial. In fact he is a bit of a baby. I have him in a 55 and that is pushing the limits from what I hear but mine seems very happy. Definatly a problem in a 46 bow with another tang though. it is probably barely 36" long if that much. Also I am moving to a 140-180 within a year so he won't have to stay in there forever. I also have only 35# of LR and one fake branch so he has a good amount of open space. They are definately more active than a trigger or clown so the confined space is probably making him aggressive. They should be peaceful by nature.
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Old 10-24-2004, 12:36 AM   #10
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Quote:
Originally Posted by MattP725
I dissagree on the aggressiveness of a yellow tang... I have one that is very very peaceful... not at all territorial. In fact he is a bit of a baby. I have him in a 55 and that is pushing the limits from what I hear but mine seems very happy. Definatly a problem in a 46 bow with another tang though. it is probably barely 36" long if that much. Also I am moving to a 140-180 within a year so he won't have to stay in there forever. I also have only 35# of LR and one fake branch so he has a good amount of open space. They are definately more active than a trigger or clown so the confined space is probably making him aggressive. They should be peaceful by nature.
Mine is as well. Like most every creature, they have a wide variety of personalities, but in general, I would say they are aggressive. Another factor is how old the Tang is. I've seen two young Tangs in a 20 gallon with no problem - obviously a problem as adults.
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