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I don't know if i am out in left field here or what, and i have only had one shark ever... (r.i.p. cat got in and ate most of him ) and i couldnt really tell you who to blame without knowing the fishes personally, however, it has been my experience that water temperature can make normally unaggressive fish more aggressive... so try cooling your water a couple of degrees, dont shock them or anything, but I actually had some aggressive MOLLIES once, i brought their tank temp down a little and everyone chilled out... hehe... chilled...

ps. Sorry to hear about your dear fishy..

hey first of all djtj the title got your attention didn't it,

Yes it did, but for other people who don't have as free fp much time as me, they might overlook it because they do not know what your problem is. There are hundreds of "help" threds out there and each asks a different question.

A better title would be help,____ and explain why you need help.

Anyway, you also have to take into consideration that most chain stores that mark their fish as community, aggressive, etc. don't deal with alot of highy agressive fish. The petco near me has tiger barbs listed as agressive. Needless to say, they don't carry any stingrays or snakeheads. Therefore, I would still consider semi-agressive community. I know it sounds wierd, but then again, I don't realyl pay attention to the labels anyway. I do the reaserch myself

hey first of all djtj the title got your attention didn't it, and to the rest of you thank you very much for all the info, My bettas must have been the case though since everyone else is great now.

goldfishgeek

Thank you for doing that.
One day I will learn how to do that.

Keith

Near enough is not good enough, therefore good enough is not near enough, and only your best will do.
I VOTE DO YOU if not WHY NOT?
VOTE NOW VOTE NOW

I must agree with Veneer here, the only reason they are called sharks is due to their appearance. After all, I have never seen a Bala Shark be that aggressive, nor an Irridescent Shark be that aggressive. There are many FW fish called "sharks".

Now back to the original thread;
How many gouramis do you have and what kind are them. As they can be territorial and aggressive as well, especially if they are building a bubble nest and another fish comes to close.

_____________________________________________________________

There is always a bigger fish...

can only speculate, not knowing sharks too well.

1. The species is called a SHARK.
2. It's classified as semi-aggressive.

Some notes:

The "shark" appellation has its basis more in a vaguely "shark-like" profile than in an inordinately aggressive or predatory character. LFS designation of a fish as "semi-aggressive" truly oversimplifies the complex interaction of individual temperament and situational variation implicit in interspecific cohabitation.

i would say the shark

Here you go Keith!

http://fishprofiles.com/files/forums/General%20Freshwater/58161.html?200504170110


GFG

_______________________________________
Never be bullied into silence. Never allow yourself to be made a victim. Accept no one's definition of your life; define yourself.
Harvey S. Firestone

Attention Bruce.

I have started the thread below come and have a look it is looking very good so far and plenty of excellent posts.

http://fishprofiles.com/files/forums/General%20Freshwater/58161.html?200504170110

Can any one short cut the above please.

Keith

Near enough is not good enough, therefore good enough is not near enough, and only your best will do.
I VOTE DO YOU if not WHY NOT?
VOTE NOW VOTE NOW

Sounds good Keith

So then we can take this post back to Bruce...

To make it simple:
If there's a bully in the tank, it's usually pretty easy to find the guilty party, through careful observation. This may take time if the fish is 'sneaky' (waiting till you're in the other room) or when the tank lights are off..
But you'll find whodunit, and when you do, let us know.
Peace,
DaFish

The Amazon Nut...

DaFishMan

I am going to start a seperate thread Re aggresive behaviour.

Keith

Near enough is not good enough, therefore good enough is not near enough, and only your best will do.
I VOTE DO YOU if not WHY NOT?
VOTE NOW VOTE NOW

So I woke up this morning and my male guppies tale has been chewed off. He is in a 55 with, Gouramis, a pleco, a red tale shark, and two female bettas, and of course more guppies, he is my oldest guppy and has been with these fish for about five months and nothing has ever happened before, the only change is I moved them all from a 20gal to a 55gal about a month ago. also one female betta has been beat up but now seems to be healing and there has been no other problems until this morning. Who could be doing this, and why all of a sudden. I have him now in a 10gal hospital tank with a friend but I really want him to pull through, and I want to know who is the bully.

I can only speculate, not knowing sharks too well.

1. The species is called a SHARK.
2. It's classified as semi-aggressive.
3. Enough owners expressed that theirs was aggressive,
to prevent me from adding them with my guppys and
platys.. That does not mean it can't be done.. Or that
it was the guilty party in this case, it very well may
have been the betta, I agree. It could have been a
guppy, some can be very nippy.

What I learned from live-bearers and cichlids:
Overcrowding can definately step up aggression,
as well as if there are both males and females in the tank..

Fish behaviour is hard enough to predict without taking into consideration the ones who do not act as they are supposed to. Fish, DO AS YOU'RE TOLD !

Aggressive fish don't stay in my tanks long either..
Now that my 90 gal tank with oscar is gone..
Trying to achieve harmony and a sense of peace
in my tanks these days. My new 'thing' is plants, driftwood and Shrimp, I even pitched the ugly red gravel.

Tanks for the Enheim Keith
(I AM gettin sick of my aquaclear filters)
Glad to see you still here posting away and doin well.
I'll check back.. Sorry took so long to respond.

The Amazon Nut...

DaFishMan

After reading those threads here is a question I would like to pose to any RTBS expert is it possible that only one of the sexes has the aggressive behaviour? Saying that is the 50-50 answer??? Just a thought

A couple of things we agree on are that fish vary in their behaviour. I do not keep an agresive fish in my tank and never have. They go back extremly quickly. I consider myself lucky in having three RTBS and they are all non agressive.

My next task I locating a good non aggressive Male Betta for my new tank when it is finally set up.

I also would not like to put any very small baby fish in my tank other than the Silver Sharks the RTBS is extremly fast and possibly more flexable.

Also Eheims forever.

Keith

Last edited by keithgh at 15-Apr-2005 04:16

Near enough is not good enough, therefore good enough is not near enough, and only your best will do.
I VOTE DO YOU if not WHY NOT?
VOTE NOW VOTE NOW

For the record, "help" doesn't make a very good title. You should try to give more info. Anway, I'd put good money down that it was the gourami. What species was it? Dwarves are very peaceful and laid back. Anything bigger, like an opaline, would definitly be the culprit.

- dj
:88)

Hi Keith, first off I respect your knowledge of fish.
And you own a shark, I don't.. But...

My best friend Adam has 2 RTBS with 4 gouramies and various other fish.. His RTBS knocked off all the guppys and were pretty aggressive, and still are without the guppys around. They like yours, leave the gouramis alone. they also leave the barbs alone. These are 3 inch sharks.
I am sure if I put the 2 in my tank, all my guppys and platys would be dead. As well as the gouramis I used to have (they were pretty mild mannered)

Here's links to what some other RTBS owners had to say.
It seems you get a 50/50 chance of having an aggression
problem.

http://www.aquahobby.com/gallery/e_bicolor.php

http://www.plantedtank.net/redtailedshark.html

Peace,
DaFish

ps - for quoting me then trashing my comments, I am swiping your nice Enheim cannister filter..



Last edited by DaFishMan at 14-Apr-2005 21:43

The Amazon Nut...

I have only ever seen my RTS chase the other fish too, I have never seen him actually hurt anyone, I took the bettas out, and the tank seems more peaceful. Thanks for the advice. However my little guppy didn't survive he was my favorite to, atleast just before this happened one of my females had his babies I know it was his because he is the only male, and I'm sure my other female will have more of his babies.Thanks again for the advice. I hope they all sort out there space soon. I hate losing fish....

I also have an RTBS in my 65 gallon which isn't at all aggressive. He swims with all the other fish and rarely bothers with any of them. He hides behind a big piece of bogwood and rock which some of my Zebra loaches also use without any problems. He is a sweetie.

OldTimer

The only time the largest RTS gets a bit aggresive (I will call it that) is while they are morning feeding he will chase any thing and it is purely a chase. I have never seen him make any contact with any fish. I have posted photos of him eating with other fish and never a problem. When not feeding he shares the same large cave with the ones he has been chasing.

I think it is there is so many caves and planted areas (the main large cave has at least four entrances and three sections)
Today I placed a few whole Algae chips and he was sharing it with a small Bronze Corie.

He does not even chase the other two RTS other than at morning feeding time, he is more concerned with the large Silver Sharks and the extra large Clown Loaches who are several times his size.

May be I am just lucky. This is not the first time I have hade several RTS in the one tank.

Keith

Near enough is not good enough, therefore good enough is not near enough, and only your best will do.
I VOTE DO YOU if not WHY NOT?
VOTE NOW VOTE NOW

Hi Keith,

I'm curious about your RTS and the non-aggressive behavior and wonder if it isn't something to do with the diet that you feed your fish I know from your previous posts that you feed your fish a lot of different foods including fruits and vegetables and wonder if this isn't causing some of there non-aggressive behavior

Jim

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Water, taken in moderation, cannot hurt anybody. -- Mark Twain