Gourami Suddenly Very Aggressive

  1. Phrixi

    Phrixi New Member Member

    For the past few days, my gourami has been very aggressive. He has started to chase around the other fish in the tank quite often. (Before, he was only slightly aggressive around feeding time)
    Any ideas on why? The other fish in the tank are very stressed because of his behavior and I am concerned about them. He’s nearly killed one already. When he’s not seen chasing the other fish, he’s usually darting back and forth. He used to be very calm. I don’t understand what has changed. I’ve had these fish for two months and they got along fine before this week.

    I suspect it’s due to the fact that the tank he is being kept in is too small. He was very young when we first got him, so he could be kept in a 20gal. He’s grown a lot since then and I need to move him into a 29gal. My parents, however, don’t agree to buy one with their money (understandable) so I’m still saving up for that, and it’s not going to be another month or so until I can set up another tank.
     
  2. Mazeus

    Mazeus Well Known Member Member

    Hi and Welcome!

    Could you give us a bit more detail. What kind of gourami? Also what is the full stocking of the tank? Finally what are the parameters (ammonia, nitrites, nitrates and ph)?

    edit- Sorry have just see this is in the blue gourami section. Please do give all other details :)
     
  3. OP
    OP
    Phrixi

    Phrixi New Member Member

    Full stocking:
    1 gourami
    3 sterbai corydoras (two of them died and we have yet to get more. Waiting for the remainig three to recover from fin rot first)

    I’ll check the parameters tomorrow morning, since it’s past 12 am and I’m not supposed to be awake, haha
     
  4. Duardo

    Duardo Valued Member Member

    maybe hes reached sexual maturity and is being more dominant
     
  5. DoubleDutch

    DoubleDutch Fishlore Legend Member

    What is the temp. Did it rise lately.