bristlenose plec agresion? - Tropical Fish Keeping - Aquarium fish care and resources

 
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post #1 of 7 Old 09-26-2010, 03:00 PM Thread Starter
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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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post #2 of 7 Old 09-27-2010, 02:19 PM
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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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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.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #3 of 7 Old 09-27-2010, 02:52 PM Thread Starter
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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 :):):)

190L Tropical Aquarium

a wise fish keeper said to me "your not a fish keeper , your a water keeper the fish just live in it"
5 Pristella Tetra
2 Bristlenose Plecs
5 Angels
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post #4 of 7 Old 09-27-2010, 03:20 PM
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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?

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #5 of 7 Old 09-27-2010, 03:40 PM Thread Starter
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my tank is 60 UK litre.,.....upgrading to a 110/120 litre soon :):):) and its just the other plac (that is smaller than him) :):):)

190L Tropical Aquarium

a wise fish keeper said to me "your not a fish keeper , your a water keeper the fish just live in it"
5 Pristella Tetra
2 Bristlenose Plecs
5 Angels
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post #6 of 7 Old 09-27-2010, 04:12 PM
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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.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #7 of 7 Old 09-27-2010, 04:16 PM Thread Starter
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i think the smaller 1 is female.....as i plan to breed them :):)

190L Tropical Aquarium

a wise fish keeper said to me "your not a fish keeper , your a water keeper the fish just live in it"
5 Pristella Tetra
2 Bristlenose Plecs
5 Angels
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