Help - Unknown Problem

[richardhandley]

I awoke this morning to find three of my parrot fish dead. They have previously been in perfect health and have had them for around four years. Now the other fish are looking lazy and sat near the bottom breathing heavily. Can anyone diagiose this problem and suggest some remedy??

devastated!!

Please help

 

[Miss Wiggle]

we need some more info to help diagnose, can you tell us the following;

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)

my first thought is a bacterial infection

 

[richardhandley]

Tank size: 34 gallons
pH: 6.7
ammonia: unknown
nitrate: unknown
tank temp: 72

Water changes once every two/three weeks

There were no symptons to the three that died last night. prior to going to bed all were fine and were lively

inhabitants 5 parrots (minus 3), two jack dempseys, plec, catfish all who have live dtogether peacefully for over two years

on dead species no signs of bite marks although slight red marks on one of the fish (these are not present on fis still in tank)

fish are all now swimming near the bottom and breathing haevily

thanks any advice would be grateful

 

[Miss Wiggle]

need to get test results for ammonia and nitrite as a minimum, take a sample of water to your lfs for testing if you've no test kit.

tank temp is possibly on the low side but not significantly enough to cause problems.

tank is really too small for all those fish, also JD's are highly aggressive fish, if you've had them from juvi's i suspect they are just coming into sexual maturation and are scrapping over territory in such a small tank and have killed the parrots, or just stress from the conflict has bought on a bacterial infection.

is the water well aerated, move the filter output so it's above the water