Go Back   Aquarium Advice - Aquarium Forum Community > Freshwater > Freshwater & Brackish - General Discussion
Click Here to Login

Join Aquarium Advice Today
Reply
 
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
 
Old 04-17-2006, 04:27 PM   #1
Aquarium Advice Newbie
 
Join Date: Apr 2006
Posts: 2
Aggressive Fish

Earlier today I found one of my female sword tails was dead, having had it's gravid spot eaten out of it, however it did not appear to have any other bits missing. The female was pregnant and I belive she had begun to spawn, and one of my other fish decided that it couldn't wait for the fry to actually be born to eat them, and instead, it would open up the sword tail and eat what it found. This little tale brings me to my question, which fish is the culprit? Other occupants of my tank are;
4 Plecos
2 Chinese Algae Eaters
4 Blue Gouramis
1 Male Betta
1 Red Tailed Black Shark
6 Zebra Danios
3 Remaining Sword Tails (1 Male 2 Female)
10 Harlequin Tetras (I think they are tetras, however I have also found them described as barbs)
1 Tiger Barb
At the moment my suspicions lie with either the Tiger Barb, or the Gouramis, as they are the only fish I belive are big enough to carry this out, as my sword tail was quite large (4.5cm nose to tail).
The Gouramis are not what I would describe as aggressive fish, they normally keep themselves to themselves and go about their business regardless of whatever else is going on in the tank. The Tiger Barb on the other hand can be quite aggressive (I know I shouldn't be keeping 1 barb on it's own however he is also quite large, and since the last of his school died, I haven't been able to find any barbs of a similar size for him to school with) however, I haven't seen this aggression go beyond chasing and fin nipping, and I have noticed that he is more interested in the food tablets I put in for my Plecs/Algae Eaters than he is in either mosquito larvae or other "live" food so it seems unlikely to me that he would go against his normal feeding pattern.

I was wondering if any other members had ever observed behaviour such as this before and if any one could suggest a course of action before another one of my female sword tails falls victim?

Thanks

Paul
__________________

__________________
Paulsw is offline   Reply With Quote
Old 04-17-2006, 05:30 PM   #2
Aquarium Advice Freak
 
Join Date: Sep 2005
Location: Columbia, Maryland
Posts: 330
All I can say is I hope that is a 150G + tank!!

Tiger barbs are mean, but not likely to be the one. You should return it if you only have 1. They are mean and will pick on the others if not in a group and will also get sick more easily. Post in the trade area if you want to just get it a good home. Send me a picture if you're in the MD area.

And Blue Gouramis are also VERY aggressive fish. I've seen them kill other fish, but with that many. Their attention should be kept to them self’s.

Rule out the Plecos if they are under 8 inches. But you should return 3 of them. 1 is more then enough for most tanks up to 120G.

Danios attack something...that would be a first

Harequin Tetras...again.....a first

IMO the most likely is the Red Tail. If it saw thre sword tail and mistook it for one of it's own it would attack. They are very territorial. That or anther Sword tail.

Honestly it might have been sick or gotten a parasite.

I count at the lest 70 inches of fish. I really hope this is a massive tank. 55G is not massive.
__________________

__________________
One Fish, Two Fish, Red Fish, Blue Fish
CompMage is offline   Reply With Quote
Old 04-17-2006, 05:49 PM   #3
Moderator Emeritus
 
Menagerie's Avatar
 
Join Date: Jan 2004
Location: Vancouver, WA
Posts: 13,230
Welcome to AA, Paulsw!

Quote:
4 Plecos
2 Chinese Algae Eaters
4 Blue Gouramis
1 Male Betta
1 Red Tailed Black Shark
6 Zebra Danios
3 Remaining Sword Tails (1 Male 2 Female)
10 Harlequin Tetras (I think they are tetras, however I have also found them described as barbs)
1 Tiger Barb
That's quite a mix of fish!
Quote:
one of my other fish decided that it couldn't wait for the fry to actually be born to eat them, and instead, it would open up the sword tail and eat what it found
That would take a lot of thought on the part of the other fish, since it is easier to simply eat free swimming fry. A fish will not expend the energy on something that may not be there.

A little background on the tank would be helpful. When was the tank established? Size of the tank? How big/old is each fish? Etc. I ask because it seems there maybe more going on than just the death of this sword. When did the rest of the school of barbs die? Have your swords had success releasing fry in the past?
__________________

Menagerie is offline   Reply With Quote
Old 04-17-2006, 11:54 PM   #4
Aquarium Advice Addict
 
Join Date: Jan 2006
Location: Cumberland, MD
Posts: 2,444
It's also possible, actually likely, that the fish was partially eaten after it was dead.
__________________
toddnbecka is offline   Reply With Quote
Reply

Tags
aggressive, aggressive fish

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Aggressive fish Squareheads Freshwater & Brackish - General Discussion 38 05-18-2009 02:57 PM
Help possible aggressive fish Mananhammer Freshwater & Brackish - General Discussion 0 08-07-2008 01:45 AM
Dwarf Gouramis/colisa lalia aggressive or non aggressive Charlotte Freshwater & Brackish - General Discussion 1 04-22-2006 07:03 PM
Fish getting MORE aggressive???? CareBear3030 Freshwater & Brackish - General Discussion 5 03-21-2004 02:48 PM
aggressive fish dittmerj Saltwater Reef Aquaria 5 03-06-2004 12:30 AM







» Photo Contest Winners







All times are GMT -4. The time now is 03:10 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.