Australia arowana

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Heck NO!

I think they're really aggressive compared to Silvers - mine is biting everything in the tank and just targeting the weaker fish. Dont recommend putting them with a silver :) maybe if you had 5 silvers in a tank than there is a chance.
 
Well, there are two, the jardini and the leichardti. They both look very similar, except that leis seem slenderer than jars.

From a very young age jars will terrorize everything, and once they hit the 8" mark and get some muscle behind them it becomes even harder to keep them with anything else. Leis are usually more peaceful, but can be a little feisty, I've heard. But I wouldn't try to do a community arowana tank with a jar unless there were about 6 or more silvers, and they all had a really huge tank.
 
best to go by shape. check a jar pic out vs a lei. most likely that the species from oz would beat up the others. jars will often kill each other in the confines of a tank until there is one survivor if at all. leis will do the same but i know a farmer that worked out if he crowded them up in a fibreglass tank and stuck in weed cover they settled a bit but i doubt it was for long term purposes.
 
i once bought a jardini that was an adult from a guy that had a whack of coral in his tank and it was pretty much a community tank. this was a gentle one.
though i dont know if its so much in the genes or the environment that dictates if they will be fully agro to everything. it seems there are a few people around that have managed to have jars with other fish. that would include other scleropages species too.
i know that some farms in south east asia have kept schools of jars with schools of arows in outdoor ponds. they say the jars dont do as well but i dont think its because the asians beat on them. probably that the asians are better suited to the climate there.
 
ausarow;4649572; said:
best to go by shape. check a jar pic out vs a lei. most likely that the species from oz would beat up the others. jars will often kill each other in the confines of a tank until there is one survivor if at all. leis will do the same but i know a farmer that worked out if he crowded them up in a fibreglass tank and stuck in weed cover they settled a bit but i doubt it was for long term purposes.


my jardini has black fins
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this one ive been told is a pearl jardini
 
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