Can 12 Chromis be introduced at the same time into a 190g?

[reefwithareefer]

I bought 5 from a reputable LFS and within a week all were gone but one, then 3 days later the last one died. Everything else in the tank was fine... I did buy two other small fish with them and they are doing great.

[gobytron]

Originally Posted by reefwithareefer

I bought 5 from a reputable LFS and within a week all were gone but one, then 3 days later the last one died. Everything else in the tank was fine... I did buy two other small fish with them and they are doing great.

probably found a reflection and offed himself.

[reefwithareefer]

Originally Posted by gobytron

probably found a reflection and offed himself.

???

[gobytron]

meaning one became dominant, then killed the others, and then turned on himself.

[reefwithareefer]

Originally Posted by gobytron

meaning one became dominant, then killed the others, and then turned on himself.

So I know that there is a strong chance that one can become dominant and kill off others. But are you joking when saying it can turn on himself because of a reflection? Does this happen to many other species as well?

[Dearth]

Originally Posted by reefwithareefer

So I know that there is a strong chance that one can become dominant and kill off others. But are you joking when saying it can turn on himself because of a reflection? Does this happen to many other species as well?

Yup most fish species if they see an image of itself can attack as they perceive it as a threat to their dominance so will attack their own image

[Madreefer]

Originally Posted by Dearth

Yup most fish species if they see an image of itself can attack as they perceive it as a threat to their dominance so will attack their own image

To the point of death?
Can you post a link to this info please.

[reefwithareefer]

Originally Posted by Dearth

Yup most fish species if they see an image of itself can attack as they perceive it as a threat to their dominance so will attack their own image

Yes, I have seen other animals like kittens do it and birds. I just did not think it would be a fight to the death.

This may pose an issue in my tank. I have a penninsula and can see the fish seeing themselves in the end of the tank when the light conditions at certain times of the day, create a mirror for them...
Who would have thunk...man, learn something new everyday. Only been doing this for a year and something as simple as that, I did not know. I will have to do more research...geesh...

[Madreefer]

What was it again?

Oh yea.....the fly that won't go away.

[gobytron]

Originally Posted by Madreefer

What was it again?

Oh yea.....the fly that won't go away.

What?

I've had dogs and cats that do the same thing.


When you think about it, in the wild, in the ocean, you just don't have the opportunity to see your reflection all that often.

It would probably freak me out too if I had never seen or heard of a mirror before.