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Results 1 to 5 of 5
  1. #1

    Default Old Fish Bullying New Fish


    0 Not allowed!
    So I'm having a little bit of a dilemma. Just yesterday I added 6 Bloodfin Tetras to my 55g which currently has 2 Turquoise Rainbows and 2 Red Rainbows, which are almost full-grown. All parameters are good. Unfortunately, I'm having some problems with aggression. I probably should've been more prepared for this considering the Rainbows are about four times the size of the juvenile tetras. I tried moving around some plants and turning off the lights to better acclimate them but it didn't really work. The Rainbows, who are normally pretty peaceful (except for the alpha male Red Rainbow, who is the main instigator) are chasing the tetras around and shepherding them into a corner. I've seen them explore a little, but the Rainbows normally go after them. The main problem is that whenever I put food in the tank, the Rainbows go into a feeding frenzy and the Tetras are too scared to participate.

    Strangely enough, with the addition of the new fish, the Rainbows are also being a lot more aggressive to each other.

    Should I ride it out and see if things get more peaceful or should I return the Tetras and maybe add some larger fish?

  2. #2

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    0 Not allowed!
    Quote Originally Posted by YankeesFan View Post
    So I'm having a little bit of a dilemma. Just yesterday I added 6 Bloodfin Tetras to my 55g which currently has 2 Turquoise Rainbows and 2 Red Rainbows, which are almost full-grown. All parameters are good. Unfortunately, I'm having some problems with aggression. I probably should've been more prepared for this considering the Rainbows are about four times the size of the juvenile tetras. I tried moving around some plants and turning off the lights to better acclimate them but it didn't really work. The Rainbows, who are normally pretty peaceful (except for the alpha male Red Rainbow, who is the main instigator) are chasing the tetras around and shepherding them into a corner. I've seen them explore a little, but the Rainbows normally go after them. The main problem is that whenever I put food in the tank, the Rainbows go into a feeding frenzy and the Tetras are too scared to participate.

    Strangely enough, with the addition of the new fish, the Rainbows are also being a lot more aggressive to each other.

    Should I ride it out and see if things get more peaceful or should I return the Tetras and maybe add some larger fish?
    I'd try to add some more red rainbows like a couple females

  3. #3

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    2 Not allowed!
    if you are adding female rainbows to the tank, add at least 3 females for every male. The other option is to increase the bloodfin numbers dramatically to like 18-20 total to see an improvement happens.

    the main problem is that you have big fish with really little fish. The bigger fish will always win out in the end during feeding. Moving plants around wont help considering all the fish like the top area of the aquarium, and do not care for what is on the bottom.

  4. #4

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    1 Not allowed!
    You can take those Rainbows aside and lecture them on why it isn't nice to bully. (As if that would work. LOL!)

    I would also suggest increasing the female-to-male ratio. Too many men and not enough women makes for rowdiness. One of my normally peaceful Crimson-Spots is beginning to chase another male. There are more females in my tank than males, but I'm thinking of adding more.

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  5. #5

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    2 Not allowed!
    I'm not familiar with the rainbows and their behavior, so certainly consider the advice of the others. But I would greatly increase the numbers of the Bloodfins as Rocksor suggested. And it sometimes does take a few days for new fish to get settled/accepted into a community.

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