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Posted by Alan Ferris on December 3, 2008, 4:16 pm
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On Wed, 3 Dec 2008 20:27:12 +0000, Edward Cowling London UK
>I've had about 4 silver sharks since they were specks in about 2002.
>They've lived reasonably happily together and yet over the last two days
>two have fought to the death. I knew they were chasing each other about
>in rather a serious way, but I didn't dream it would go so far. When I
>got up this morning the biggest was dead and his assailant looked in a
>very bad way. Tonight I came home and found him dead.
>
>I've had Angel Fish & Oscar's go into what I'd call "Last Man Standing"
>mode, but this behaviour by placid Silver Sharks is a new one. The other
>fish are quite subdued and keeping in the weeds.
Could be overcrowding or they have simply grown to large for the
space.
To keep silver sharks you need a large tank so that each shark can
mark out its own territory. Sadly many are sold in shops with the
comment that they are not territorial, they are. The aggression can
also be triggered if a male is seeking to spawn with a female, if
there is simply not enough room for it to have a large clear
territory, it will start to make one by fighting with the other
sharks, if they have no room to retreat, then death is the outcome.
It pays to do research into the behaviour of fish and not take the
work of shopkeepers or even some aquarium books.
--
Ferrit
()'.'.'()
( (T) )
( ) . ( )
(")_(")
"The right to be let alone is indeed the beginning of all freedom"
Supreme Court Justice William Orville Douglas
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>They've lived reasonably happily together and yet over the last two days
>two have fought to the death. I knew they were chasing each other about
>in rather a serious way, but I didn't dream it would go so far. When I
>got up this morning the biggest was dead and his assailant looked in a
>very bad way. Tonight I came home and found him dead.
>
>I've had Angel Fish & Oscar's go into what I'd call "Last Man Standing"
>mode, but this behaviour by placid Silver Sharks is a new one. The other
>fish are quite subdued and keeping in the weeds.