3 Fish Dead In A Week

[adamwebb28]

Hi

I'm still very new to looking after fish, although I've had my tank for over a year. Its been pretty settled for months now, and all my fish looked fairly happy and no sign of desease. Yet last week one of my fish died, and yesterday 2 more. The first one has been in the tank for at least a year and the 2 that died yesterday had been in for about 3 months. I did water tests before doing water changes and the results were fairly low, my tank has been in a much worse state which hasnt affected these fish.

The only thing I have noticed recently, the fish make alot of noise during the night, sounds almost like they're chasing eachother. Could this have been a problem? My brother thinks perhaps they were stressed out, hence the sudden deaths.

Is there anything else I could try? I will probably go back to the aquatic shop I got some of the fish from at the weekend for some advice too.

Thanks in advance!

 

[scooterchick]

Hi,

Could be a number of things. Can you fill out the below?




Tank size:
pH:
ammonia:
nitrite:
nitrate:
kH:
gH:
tank temp:

Fish Symptoms (include full description including lesion, color, location, fish behavior):

Volume and Frequency of water changes:

Chemical Additives or Media in your tank:

Tank inhabitants:

Recent additions to your tank (living or decoration):

Exposure to chemicals:

Digital photo (include if possible):

 

[adamwebb28]

Tank size: 90 ltr
pH: 7.6
ammonia: 0
nitrite: 0
nitrate:
kH:
gH:
tank temp: 29-30 degrees (slightly higher than I have the heater sent to)
**These are the current conditions, I have done a water change since the two fish died. However the readings I took last night were only low amounts.

Fish Symptoms (include full description including lesion, color, location, fish behavior):
No symptoms that I know, they all seemed pretty happy, nothing obvious when looking at them other than the fighting/chasing.

Volume and Frequency of water changes:
Once a week, normally about 40%

Chemical Additives or Media in your tank:
Are you referring to the de chloroniser etc? (i think thats what its called). I havent put any in for a couple of weeks as I ran out.

Tank inhabitants:
No 100% on their names, but An Angel Fish, Gourami, Silver shark, algae eater (not 100% sure as i didnt actually buy it), and two other fish that I believe are chichilds? Im having a few problems finding their exact names.

Recent additions to your tank (living or decoration):
Nothing in the last 3 months (two of which are the ones that died)
Exposure to chemicals:
No chemicals that I know of.
Digital photo (include if possible):

Sorry I've not been very helpful here, as I said Im still new to this!

 

[SJ2K]

Yet last week one of my fish died, and yesterday 2 more.

Are you referring to the de chloroniser etc? (i think thats what its called). I havent put any in for a couple of weeks as I ran out.

Im not saying this is deffinatly an answer but if fish start acting irraticly and dieing shortly after running out (and not re-stocking) of dechlorinator may not be a coincidense. Chlorine is toxic to humans at a high enough level and the same can be said for fish and the bacteria within your filter/gravel.

 

[WILDER]

If the tank is only a 90 litre the tank is to small for some of them fish and its overstocked.
Silver sharks need to be kept in groups and as get bigger need 120 gallon tanks.
I would look into your fish as they may not be getting on in such a small tank.
Declorinator can only get away with not using it when you have ran out is very small water changes.

 

[adamwebb28]

Thanks,

I've been considering upgrading my tank to The Juwel Rio 125. Would that be big enough? Its pretty much the biggest tank I can get in my room. Last time I take advice from Pets At Home, I bought alot of these fish together and ask whether the tank would be big enough, they said it would be fine!

I will definently be buying more dechlorinator then.

Are there any good tutorials on how to do water changes on the internet anywhere?

Thanks again!

 

[SJ2K]

You'll find a few articles on here but its fairly straight forward, just get yourself a gravel vac (if you dont already have one), use its to clean the gravel and also remove several buckets of water. Then refill with dechlorinated water

 

[Spooky76]

Check this for the weekly maintenance

http/www.fishforums.net/index.php?showtopic=171045

No a Rio125 is not big enough for sharks. They need at least a 4ft tank if not bigger. They grow to 12" long !

Your pet shop didnt know what they were talking about. I would suggest posting on here if you have any questions about tank mates etc in future.

Good luck.

 

[adamwebb28]

Its a silver shark, but think it is infact a loach??? Just looks like a shark. Sorry im not being to specific there, again Pets At Home!

Edit:
This one:
http/www.aquariumlife.net/profiles/cypri...hark/100085.asp

 

[adamwebb28]

Ok, I think I've found the culprit. It looks like my silver shark is the problem, I can see it continually attacking my gourami. It actually doesnt look like my gourami has much time left. So how can I get round this? The shark is obviously the problem. But seeing as the only other tank we have has 3 peranah in it. So what do I do? I doubt I'll be able to get a new tank bought and setup in time to save the gourami, but at this rate it'll have the rest of my fish in a few days!

So much for these fish being perfect with eachother (according to pets at home that is!)

 

[SJ2K]

Pirahna and silver sharks in a small community aquarium, wow, match made in heaven