Lost One Of My Gold Laser's

[Harlequins]

Last night i spotted one of my gold laser corys had lost its colour and looking white more than gold,i separated the wee thing,to find it had died this morning...

Not sure what it died off, no red marks etc... i hope the rest will be ok

 

[DBT85]

Not good are the others still looking ok?

And on a slightly different note, are all those corys in that one 55gal tank?