Help, Agression in Aquarium
Printed From: Utah Reefs
Category: Help
Forum Name: General Help
Forum Description: The place to ask about pest, problems, hitchhikers, etc.
URL: http://www.utahreefs.com/forum/forum_posts.asp?TID=59877
Printed Date: August 04 2025 at 5:03pm
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Topic: Help, Agression in Aquarium
Posted By: knowen87
Subject: Help, Agression in Aquarium
Date Posted: October 25 2012 at 9:28am
I am in need of some help. I have a sailfin tang a pair of ocellaris and a flame angel. The all attack anything new that comes into my tank. None of them are particularly aggressive, but together they are evil and a nip here and a chase there cause too much stress for the new guys. I have a 92 gallon corner tank plumbed into the basement with a 60 gallon sump. My water parameters are perfect. Calc, Mag, Alk all at the recommended levels. No detectable Nitrite, Nitrate or Ammonia. The last four fish I have put in there have gone to the great fishbowl in the sky.
Help!!!
Sailfin in 3"
Clowns are 2.5" and 2" and the flame angel is 2"
Clowns don't have an anemone to cause agrression (or eat my fish ).
Sailfin is the newest, Clowns are the oldest, flames in the middle.
I have 152 gallons of water and 9" of mean fish
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Replies:
Posted By: ReefdUp
Date Posted: October 25 2012 at 9:29am
What fish have you tried? What techniques have you tried to introduce them all?
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www.reefdup.com
Diving since 2009, reefkeeping since 2007, & fishkeeping since 1987
200g, 75g, & 15g Systems
PADI Advanced Open Water
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Posted By: knowen87
Date Posted: October 25 2012 at 9:33am
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a two spot gobie, a dragon gobie, and two anthias. I put them in the sump for a day after drip acclimation and then into the main display when the lights are off.
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Posted By: knowen87
Date Posted: October 25 2012 at 9:35am
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the anthias were bought at the same time but the gobies were each separate.
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Posted By: ReefdUp
Date Posted: October 25 2012 at 9:44am
I learned back when I kept guinea pigs that the best way to get two to like each other was to scare them. I would put both of them in water (guinea pigs are generally terrified of baths), and so they were both focused on the water instead of each other.
If your rockwork is easily rearranged, try moving things around temporarily so that the fish will focus on a monster moving their homes than a new fish.
Fish also view other fish as a food threat or territorial threat. Most of the fish you mentioned aren't direct competition with others (the tang shouldn't care about the anthias, etc.) If this is still happening, then the fish may not feel comfortable with what they already have. Is there enough fresh algae for the tang? (Clowns are just mean regardless). Is there enough mixed food for the angel? Are there sufficient hiding places for everyone?
Whenever I introduce a fish, I feed all fish right beforehand so they feel less threatened. Once the fish is in the tank, then I feed again to keep them all distracted. You could also try an acclimation box, and place the box in approximately the area the fish will tend to keep (gobies near the bottom, anthias near the top, etc.) This will allow the fish to get used to the presence of a newcomer without the aggression.
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www.reefdup.com
Diving since 2009, reefkeeping since 2007, & fishkeeping since 1987
200g, 75g, & 15g Systems
PADI Advanced Open Water
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Posted By: knowen87
Date Posted: October 25 2012 at 4:59pm
Thanks reefdup I will have to try that with a new arival. But that might not be for a while
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Posted By: ReefdUp
Date Posted: October 25 2012 at 5:21pm
Don't blame you - it's frustrating when things should work but don't for unknown reasons. GL
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www.reefdup.com
Diving since 2009, reefkeeping since 2007, & fishkeeping since 1987
200g, 75g, & 15g Systems
PADI Advanced Open Water
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Posted By: DLindquist
Date Posted: October 25 2012 at 5:24pm
Clowns should be the last fish introduced. Even the sailfin will become territorial over time. While I don't use one, I too would suggest an acclimation box. Or removing the clowns until your stocking is complete.
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