Is my Rainbow Shark a problem?
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Is my Rainbow Shark a problem?

This is a discussion on Is my Rainbow Shark a problem? within the Cyprinids and Atherinids forums, part of the Freshwater and Tropical Fish category; --> I was just wondering if anybody could let me know if my Rainbow Shark is a problem. A few weeks ago, I added a ...

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Is my Rainbow Shark a problem?
Old 08-25-2008, 02:24 PM   #1
 
Is my Rainbow Shark a problem?

I was just wondering if anybody could let me know if my Rainbow Shark is a problem. A few weeks ago, I added a Pictus Cat to my community tank. Immediately, I noticed that my Rainbow Shark really followed him around, and chased him quite often. I wasn't sure if it was playful or not, but after about 2-3 days, I noticed that the Pictus had a case of the ick. I immediately took him out and put him into my quarantine tank, and then noticed that many of my other fish now had it too. Instead of taking EVERYTHING out and putting them into the quarantine tank, I decided to treat the whole tank. Unfortunately, I lost the Pictus, and also all of my black neon tetras, and glowlight tetras. Everything else however were saved.

Now, Im wondering if the Rainbow Shark caused the ick outbreak, because of the constant chasing he was doing to the Pictus, was he stressing him out too much? Now, I noticed the Rainbow Shark seems to be chasing my Pleco once in a while, and Im afraid it might happen again.
The Rainbow was never like that before. Before the Pictus, he would just stay around the bottom, hide in caves and not bother anybody. Thanks in advance for anybody who has any ideas.
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Old 08-25-2008, 04:18 PM   #2
 
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What size tank is this? The rainbow shark can get rather territorial and since pictus cats occupy the same level the shark was probably defending his territory and stessed the pictus cat. Did you quarantine the pictus cat before you added him to your main tank?
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Old 08-26-2008, 12:48 PM   #3
 
Thanks for the reply.

I have a 120 gallon tank. I didn't quarantine the Pictus before I put him in. I read all over these forums that some people say you should, maybe for like 2 weeks, then others say its not really a problem unless you're suspicious.
What would you suggest??
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Old 08-26-2008, 02:40 PM   #4
 
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I would strongly recommend a quarantine tank. Honestly, I didn't have one for the longest time. I recently turned my 10 gallon into a QT tank after having some problems with new fish. Besides sparing infecting your main tank with anything new fish may bring in (such as ick) it gets expensive to treat a large tank sometimes! I had a bout with columnaris (brought in by new fish) in my 55 gallon and had to treat with an antibiotic for about 10 days. Each box of Furan 2 cost about $9 and one box only dosed 2 days for the 55. So it added up.

I now QT any new fish for a minimum of 2 weeks, with 3-4 weeks being optimum. Also, observing the new fish in a smaller QT gives you the opportunity to notice anything unusual that you might otherwise not notice in a larger tank.

120 gallons is a good size tank so hopefully your rainbow shark and the pleco will work things out. :)
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