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Old 07-03-2010, 11:08 PM   #1
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chromis bully

I had 4 green chromis in my 20 gallon tank... until yesterday. I noticed one was acting weird staying in place a lot and away from the others and being chased a little. Well he died... I was under the impression they were a friendly schooling fish. I have noticed there is one that is doing the majority of the chasing. Will he continue to kill off the others or will he now be satisfied?
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Old 07-06-2010, 11:00 PM   #2
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anyone have any experience with saltwater fish on this forum?
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Old 07-07-2010, 11:38 AM   #3
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Fish aren't too far from people. I dont have any experience with Chromis, but I would imagine you might have gotten 2 males or 2 female "leaders" who fought for control. Just a guess though. Has he/she killed again?
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Old 07-07-2010, 01:03 PM   #4
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lol no not yet.
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Old 07-07-2010, 02:46 PM   #5
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You are probably alright then. Keep us posted.
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Old 07-08-2010, 03:28 PM   #6
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I had a similar problem. I have a 100 gallon and I got four when my tank cycled. Two were more dominent and I felt they would not let the other two eat and they would not stay with the group died. Then when I added my two clowns the female clown would not let the last two chromis eat and the two chromis died. My other fish are fine and well. I was really bummed becuase they were nice to watch school back and forth. I want to get more and my lfs said to keep an odd number in the tank like 3 or 5. Kind of wierd but i'll try it next time I get some chromis.
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Old 07-09-2010, 01:52 AM   #7
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fish all eating well and seem to be doing fine, gonna add two more when I put them all in my 75
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Old 07-09-2010, 03:12 AM   #8
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In my experience, thats just the way it works with Chromis. I started with 7 in my 180-gallon and ended up with 4 within a few weeks. Now I have had the same 4 for a long time.
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Old 07-09-2010, 03:44 AM   #9
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Chromis are a type of damsel, Aggressive fish once settled and established a home.

Chromis are also a hit and miss, The will most of the time pick each other off untill only a few are left. Or you may get off on the odd chance and have them all survive.
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Old 07-09-2010, 02:42 PM   #10
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From past experiences I've had with blue/green chromis, they'll slowly pick one another off until there's one left. Morbid, but that's just my experience. I've managed to keep 7 together peacefully in a 220 for a year until a power outage.
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