But what prompts them to get aggressive? I don’t think they just go homicidal just because. There has to be a reason. Which I believe is food. Sorry. This reply was more meant for jdiedenbaugh than you.
Blue/Green Chromis
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Sharkbait19
10K Club member
I think it has to do with dominance and territory. Each one wants to be in charge of the tank.
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StPatrick89
Well-Known Member
So stress is what induces Uronema?
jdiefenbaugh
Active Member
Idk, species survival most likely. Conspecifics/congeners in aquariums don't generally get along for the most part, mix 15 powder blue tangs in a 220 and see what happens. Again, once they realize there is no threat of predation, is when it starts going down hill. These have been kept in large groups in large exhibits in public aquariums for years, and it's always the same outcome.
As far as food competition, I don't see that as an issue at all.
I put 100 in here, and the 10 or so pictured were all that were left after 1 year. They did not starve to death. I have tried them in bigger tanks, as have other aquarists.
So stress is what induces Uronema?
No. From what I know, it is either there or not there. It’s a parasite that lives only on the fish itself. Stress weakens the immune system which allows the parasite to really take hold and cause the problem.
If you put 15 blue tangs in a 220 they are going to compete for food. It has nothing to do with predation. The tank you show has 100s of other fish who are going to compete for the same food as the chromis. Chromis aren’t going to out compete(what look to be anthias) for food.Idk, species survival most likely. Conspecifics and same species in aquariums don't generally get along for the most part, mix 15 powder blue tangs in a 220 and see what happens. Again, once they realize there is no threat of predation, is when it starts going down hill. These have been kept in large groups in large exhibits in public aquariums for years, and it's always the same outcome.
As far as food competition, I don't see that as an issue at all.
I put 100 in here, and the 10 or so pictured were all that were left after 1 year. They did not starve to death. I have tried them in bigger tanks, as have other aquarists.
jdiefenbaugh
Active Member
Ok.
That’s it? Ok? You are straight up not telling the truth. There are hundreds of other fish there that will outcompete chromis for food and you say it’s because the chromis “killed each other off because of predation?” The chromis “killed each other off” because there was no food for them.
jdiefenbaugh
Active Member
Yes, that's it, because literally no matter what I say you're not open to listening.
26,000 gal, 7 chromis left of 50
6,000 gal, single digit chromis left after losses through predation
I tried blues in a 10,000 Caribbean exhibit, same result. These are tanks I took care of or built for 6 years. I have had discussions with 20+ year professional aquarists, with same results. Clearly I have no idea what I'm talking about.
“6,000 gal, single digit chromis left after losses through predation”. So you are saying they are dying because they are being preyed upon by other fish???Yes, that's it, because literally no matter what I say you're not open to listening.
26,000 gal, 7 chromis left of 50
6,000 gal, single digit chromis left after losses through predation
I tried blues in a 10,000 Caribbean exhibit, same result. These are tanks I took care of or built for 6 years. I have had discussions with 20+ year professional aquarists, with same results. Clearly I have no idea what I'm talking about.
jdiefenbaugh
Active Member
I think I have made my experience with these fish pretty clear. Have a great night!
Also, those tank from the Omaha Zoo should be embarrassed by how ****** they look in those pictures.Yes, that's it, because literally no matter what I say you're not open to listening.
26,000 gal, 7 chromis left of 50
6,000 gal, single digit chromis left after losses through predation
I tried blues in a 10,000 Caribbean exhibit, same result. These are tanks I took care of or built for 6 years. I have had discussions with 20+ year professional aquarists, with same results. Clearly I have no idea what I'm talking about.
So I think a couple people have actually answered your question today. There are success stories of keeping multiple chromis. You obviously got the Amazon reviews and the non Amazon reviews. You make your own choice knowing that it is possible and that as long as they are fed and not overstocked with competing fish and they can thrive for many years.
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billandwende
Community Member
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I started with 6 (always order more than I want). 1 DOA 1 didn't make it through QT. 1 jumped first week into display. 3 were happy for about 3 years then they began to pick on one. the picked on one finally died 2 left have been just hanging out fine since. I await the death of 1 of the 2. Then I assume the remaining survivor will die of loneliness. Then I'll Order 6.
If it matters its a 350 gallon tank that is heavily overfed. I like fat fish.
If it matters its a 350 gallon tank that is heavily overfed. I like fat fish.
DrZoidburg
Valuable Member
I have 9 blue reef chromis in a 220. Their all good with each other. Feed 2-3x a day. Mostly shoal left and right all day. With one blue tang that must think its a chromis. I did notice some things. In a tank with low flow they tended to me more picky to food, and aggressive with each other. When put them in big tank with lots of flow they eat everything, and shoal all day no aggression.
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