Paralysed Gouami ?

[Jacksons]

Hi I hope someone can help ?

My husband is away at the mo and I don't normally have anything to do with the fish except look at them lol !!
We got 2 what i think are gouami's last week and all seamed fine one died the other day with a few other fish for no reason I know ! But came in to day and the blue red one has no movement in its end with the whole thing changed colour it looks like its been dip died !!!!!
Really sorry I know nothing of tank info the fish just keeps still in one corner and is only moving the little fins on its side .
Three zebra fish died yesturday !!! they were fine oh just looked again and now a red blue neon is dead !!!!
Help please

 

[phoenixgsd]

we would need to know the water stats, ammonia and nitrite especially, to have alot of sudden deaths usually means poor water quality or something has got into the tank like air freshner fo example poisoning them, both can be made better by large water changes with temperature matched dechlorinated water