The Most Aggressive Freshwater Aquarium Species

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The most aggressive fish that i have personally owned is hands down a Buttikoferi i had. Actually had to get rid of him he was so bad
 
Andrink said:
I'm sure the male betta pound for pound is the most destructive and aggressive freshwater aquarium fish. It's small but an amazing fighter, if it were against a juvenile oscar the same size as one of them, the oscar would be mauled. Any fish that looks like another male gets killed.


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Not really... Because they have long fins they get harassed themselves.. I put a male betta in a 10 gallon community guppy tank when i started the hobby and the guppies actually nipped the betta up! And they must of resembled a male betta to with their long fins....


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FuriousFish said:
Not really... Because they have long fins they get harassed themselves.. I put a male betta in a 10 gallon community guppy tank when i started the hobby and the guppies actually nipped the betta up! And they must of resembled a male betta to with their long fins....


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My male betta gets food stolen from him by ghost shrimp. He's the biggest pansy.

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Andrink said:
Don't have a video of it being really aggressive but this is my jardini right now. It's still that size but 2 clown knifes are gone and peacock eel was eaten along with a few iridescent sharks. It is a crazy fighter, it made my knife fish stay in one place for 3 days. I decided we should separate it. So now it is in a tub. My dad now thinks that we can't get any new fish for the tank because it's going to be overstocked an the jardini will kill it. I've been looking at some red snook lately and I think they are pretty neat, but my dad still thinks my jardini would kill it. I don't think my jardini likes new tankmates. Right now, my delhezi, believe it or not, is growing to nearly 15-16 inches. You can see it in the photo. Most people here say they average at 14 inches, well ours has either taken drugs at the store we got it at or it just grows massive. It will reach 18 inches in while, and when it happens, my clown syno cat stays in the 75 gallon and the other big guys go to my 225.


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I don't see anything in that tank that is even close to 16 inches


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A orino x monoculus cichla lol...
His murdered victims so far:
12 inch nile perch
13 inch cichla mono
12 inch russian sturegon
10 inch giraffenose catfish

and so on....

He is a real psycho
 
I had a female jewel cichlid that killed anything else in the tank. SHe was originally with scissortail rasboras which were supposed to be fast and be able to stay away and such. Nope. She killed every one.
 
Plec123 said:
I had a female jewel cichlid that killed anything else in the tank. SHe was originally with scissortail rasboras which were supposed to be fast and be able to stay away and such. Nope. She killed every one.
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Jewels are killers. I was just posting about them on another thread


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I dunno what jewels are. I know piranhas are semi aggressive - aggressive. Or just plain aggressive. I know oscars are known to attack other weaker fish. But not the strong ones. I have heard stories of people keeping oscars with jardini and end up with an oscar being ripped apart by a jardini.


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My jardini bit an Oscars head and practically ripped its eye out , it lived for a while but was in a bad way
 
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