Blue chromis
- Thread starter tomaquar
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ReeferBill
New member
Blue Chromis?
Blue Chromis?
Blue Chromis have the same temperment as the green chromis.Great schooling and great community fish. Get 6 small ones for some bright blue color.:fish2::fish2::fish2::fish2::fish2::fish2:
Blue Chromis?
Blue Chromis have the same temperment as the green chromis.Great schooling and great community fish. Get 6 small ones for some bright blue color.:fish2::fish2::fish2::fish2::fish2::fish2:
Reefers Digest
New member
Advice
Advice
Blue Chromis (Chromis cyanea) are extremely similar to Blue-Green Chromis (Chromis viridis) in disposition. They tend to be fairly peaceful, however, they may display intrachromis aggression towards weaker and/or smaller members (see: the countless posts about 5 Chromis turning into 1). With sufficient tank volume, I've found this to subside.
In concerns to the first reply, I completely disagree. Chromis rarely tend to display the kind of inter-species aggression other Pomacentridae, mainly the those with the name extension "damsel" do.
One last interesting fact: C. cyanea are of western Atlantic origin, while C. viridis are of Indo-Pacific origin... for those considering biotopes.
Advice
Blue Chromis (Chromis cyanea) are extremely similar to Blue-Green Chromis (Chromis viridis) in disposition. They tend to be fairly peaceful, however, they may display intrachromis aggression towards weaker and/or smaller members (see: the countless posts about 5 Chromis turning into 1). With sufficient tank volume, I've found this to subside.
In concerns to the first reply, I completely disagree. Chromis rarely tend to display the kind of inter-species aggression other Pomacentridae, mainly the those with the name extension "damsel" do.
One last interesting fact: C. cyanea are of western Atlantic origin, while C. viridis are of Indo-Pacific origin... for those considering biotopes.
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Years ago I used to keep schools of these fish without any problems. Never noticed any aggression between them. Now I can't keep any alive. They either just die in QT or disappear once I put them in the DT. I've been reading posts from people who say they start out with 6 or 7, and are down to only 1 after a few months. They claim they kill one another off. It's weird how experiences with the same fish change over time.
disc1
-RT * ln(k)
I've always had that experience. They eventually winnow themselves down to one. I did read recently that the secret to preventing that is to have something bigger and more aggresive than they are. It forces them to school for safety and they won't pick on one another so much.
Interesting theory. I've also been told if you put any damsel in a large enough tank that will cut back on their aggression. I always used to keep a small school of Chromis in this 58g reef I've had on and off for the past 20 years. Back then it wasn't a problem. Now, it's a problem...
ccalabro
New member
I have definitely had this experience in my tank (5 down to 1)...the theory about adding a damsel to prevent this is interesting...anyone else have experience with it?
I think maybe I need to clarify. I meant that I was told by someone that if you put ANY DAMSEL in a large enough aquarium, say 100+ gal, that cuts down on THAT DAMSEL'S AGGRESSION. I think it's because they don't feel the need to be so territorial if the tank is large enough. I wasn't meaning if you already had a school of Chromis in the tank and added a Damsel, that would make the Chromis stop fighting amongst themselves and band together. Another poster said if you added an aggressive fish it might force the Chromis to school together out of necessity. Not sure if he had a regular Damsel in mind when he said this.
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cloak
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LinkinReef
Member
I have 6 of them in my 210 and they only show a tiny bit of aggression towards each other
