Losing My Corys

[kll1221]

I am really sad I have had my corys for over a year now and now lost 4 of them in a week. Is that thier life span? I have a pl*co in the tank is he hurting them?

My water quality is good where it should be and I do water changes every week to week and a half.

Thanks in advance

 

[MissFishy]

Take a measure of your water params, your tank could have gone on a mini spike, it happens. What do the cory bodies look like? Have they been injured? How large is this tank? Have you added anything new recently?

 

[kll1221]

the water parameters are and have been fine and no new fish at all.

Have a 55 gallon tank and only think that looks funny is their fins ar closed/not clamped the other corys look good great fins

 

[MissFishy]

"Fine" doesn't really describe water params...check to see if your nitrates are building up, that could be a cause of fish stress/deaths/clamped fins.

 

[kll1221]

nitrates are not building up as I said twice now the water parameters are right where the should be the tank has been set up for over a year and the fins weren't clamped as I stated as well.