Meanest nastiest killer of a wet pet

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fuzzlebug said:
Bull sharks have been caught deep into freshwater lakes, they have also been recorded breeding, or atleast giving birth in freshwater. Whether there is a population that lives permanently in fw, im not sure, but i would bet on it with the large amount of prey and lack of competion makes freshwater rivers a good place for a maniac bullshark. But on topic id have to go with the convict as one on the meanest fish pound for pound.

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Here's a group of six Bulls living in a golf courses land locked freshwater lake. According to the article they've even started breeding in the lake. Looks like they finally found a way to make golf interesting, taking bets on who makes it back retreiving their ball from the water hazard. http://www.treehugger.com/natural-sciences/bull-sharks-invade-australian-golf-course-lake.html

[video=youtube;dn41Odq8hyc]https://www.youtube.com/watch?v=dn41Odq8hyc[/video]
 
if we are talking about fish than can be housed in a private homeaquarium , then my bet would be on jardini arowana , fakara puffer ,african lungfish or flowerhorns . these fish are aggressive and would attack for reason other than predation .
if its about any freshwater critters then it would be bullshark or saltwater crocodiles
 
For making a mess of tank mates in a freshwater setup I've got to got with wolf fish , tigerfish , snakeheads and for needless bullying for tankspace and territories I'd say dovii and jardini they seem to smash fish up for no reason what so ever , jardini are the worst for constant bullying they never give up if they don't want a fish in there tank its either move it quickly or it dies :banghead:

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What about hemibagrus spp.?

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cichlidfish said:
I had a same sized convict kill a beta and serpae tetras eat off the fins of another beta. Betas don't stand a chance w/ fast nippy fish. Tiger barbs might nip too much too.


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Sarcasm. But what were you thinking putting a convict with a betta? Seriously...

However my betta did kill a couple Cory cats.




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ehh said:
Sarcasm. But what were you thinking putting a convict with a betta? Seriously...

However my betta did kill a couple Cory cats.




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It really happened. I tried this in a 55g. The con ignored the beta until the beta started getting aggressive. I didn't think it would be a problem since the beta stayed at the top of the tank and con at the bottom. Usually cichlids ignore fish that aren't like them or too big to eat.
Cories are fragile fish and betas tend to get aggressive a/ anything. They often pick fights they cannot win however.


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koltsixx said:
Here's a group of six Bulls living in a golf courses land locked freshwater lake. According to the article they've even started breeding in the lake. Looks like they finally found a way to make golf interesting, taking bets on who makes it back retreiving their ball from the water hazard. http://www.treehugger.com/natural-sciences/bull-sharks-invade-australian-golf-course-lake.html

[video=youtube;dn41Odq8hyc]https://www.youtube.com/watch?v=dn41Odq8hyc[/video]
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Fascinating. Though I must admit that I am dubious as to the validity of their claims. If the flood story is true, then I suspect that this golf course is probably fairly close to the ocean or a tidal marsh, which would indicate that it is likely brackish. Even if it is full fresh, I'm not surprised to see that the sharks are thriving. Bulls are known to be anadromous, which means that while they live their lives in the ocean they're capable of surviving and even thriving in fresh, as that is where they spawn. Steelhead are a good example of this. If the pond is fresh, I rather doubt the flood claim. I find it more likely that the fish were caught and thrown into the pond as a gimmick.

I have a skeptical mind and the story as presented seem a little to Deus ex Machina for my tastes. Plus, as a limnologist for the St. Johns River Water Management District in Florida, I work day in and day out with ponds such as those in the video. Unless this golf course is right on a salt marsh, the flood story just doesn't seem right to me.

*Kolt- I'm answering in general, not to you specifically.
 
I'm also curious to how they are thriving and possibly breeding. Bulls get large so they eat a lot and unless they are feeding them themselves I can't see any golf course pond being able to have a stable amount of fish to keep these sharks alive.


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