2 fish died suddenly

[fryebaby9431]

I have a 40 gallon breeder tank . As of now it is a FOWLR tank. I test my water pretty frequently and I tested it this morning after I noticed 2 of my damsels swimming really weird and looking like they were gasping for breathe. Ammonia 0 nitrite 0 nitrates 0. 3-4 hours after first waking up and noticing them swimming weird one was dead being ripped apart by the other fish. And the other dead underneath one of the rocks. What could have caused this? All the other fish and inverts look healthy


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[BigT75]

I am gonna say I had 2 green Chromis do same thing mine stayed away from the rest of the pack and breath rapidly they did this for several days then poof dead and my crabs had a fresh ls day torn them up fast


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[BigT75]

And all my tests were on point


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[vhuang168]

Do you quarrantine your incoming fish?

Do you treat for parasites or disease before putting them in the tank?

How do you acclimate the fish to your tank?


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[mcgyvr]

Fish die.. it happens..

not enough detail though for an educated guess..

 

[gprdypoo04]

Go buy another for a buck....

 

[lagatbezan]

I wouldn't personally buy another one until you know what caused their death.
Was there any physical or behavioral symptoms? were they eating? what other fish in the tank? how long have you had them? what fish was tearing it apart?
could be from a parasite in which case you should try to figure out what and get it out of your system before adding new fish or something else like maybe lack of 02; SG not correct ect.
Damsels are usually known to be pretty hardy so my educated guess would be some kind of parasite.