Tropical Fish Keeping - Aquarium fish care and resources

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-   -   bristlenose plec agresion? (http://www.tropicalfishkeeping.com/catfish/bristlenose-plec-agresion-52408/)

fryup 09-26-2010 03:00 PM

bristlenose plec agresion?
 
my 3.5 inch male is becomeing very agresive, he is just developing his barbs and if any of my fish swim too close to him then he atacks them . . . . . Is this normal behaviour ? :)
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Byron 09-27-2010 02:19 PM

Quote:

Originally Posted by fryup (Post 479709)
my 3.5 inch male is becomeing very agresive, he is just developing his barbs and if any of my fish swim too close to him then he atacks them . . . . . Is this normal behaviour ? :)
Posted via Mobile Device

Is this with any fish, or just bottom fish? If the latter, it is a territorial issue. Also, aggression in otherwise peaceful fish is often caused by environmental issues. If you check the profile of this fish, you will note it needs quite dim lighting, and places to hide. In exposed or brightly lit tanks, such fish can feel "threatened" and respond with increased aggression to all and sundry.

fryup 09-27-2010 02:52 PM

my tank has a cover to dim the light and has 2 caves (1 on each side of tank) and 2 half coco nut shells (also 1 on each side) i think it mite just be because he is developing :):):)

Byron 09-27-2010 03:20 PM

Quote:

Originally Posted by fryup (Post 480537)
my tank has a cover to dim the light and has 2 caves (1 on each side of tank) and 2 half coco nut shells (also 1 on each side) i think it mite just be because he is developing :):):)

That's good. I forgot earlier to ask about tank size? And how many fish? And is this aggression to all fish, or just bottom fish?

fryup 09-27-2010 03:40 PM

my tank is 60 UK litre.,.....upgrading to a 110/120 litre soon :):):) and its just the other plac (that is smaller than him) :):):)

Byron 09-27-2010 04:12 PM

Quote:

Originally Posted by fryup (Post 480569)
my tank is 60 UK litre.,.....upgrading to a 110/120 litre soon :):):) and its just the other plac (that is smaller than him) :):):)

Then that is to be expected. These fish are territorial with their own. As long as they each have more than one hiding spot, they'll be fine. But expect this behaviour to continue permanently, esp in a smaller tank (like the 60L). It will be more subdued in larger quarters. If the other fish is a male, which sounds probable from the aggression, it will definitely continue, as noted in our profile of the BN.

fryup 09-27-2010 04:16 PM

i think the smaller 1 is female.....as i plan to breed them :):)


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