worried about my boy cat elmo and the amount of tuna hes been eating

hi , there  i lost my 3 year old girl cat Skye at the start of the month due to cancer , before they knew what it was the vet 1st thought it was FIP  ... on going tests resulting in it highly unlikely to be FIP due to the numbers per slide ratio was less than 10 and it would have had to have been in the 100s .She had stopped eating at the time and were told to give her tuna as she wasnt eating to perk her up to give her the meds with food as its a soft meat with a strong smell it would maybe work  .                                                                                                                               after  she passed we were worried about my boy cat Elmo been down and sad and not eating and  we were giving him tuna cheer him up as well as lots of attention and he loves it . I never knew till tonight how bad tuna was for cats and hes been eating it everyday for about 23 days as well as his royal cann indoor dry food and now am worried after reading up on this... yellow fats... that he could be ill from all that tuna ....  1st thing tomorrow i will get him to the vet and tell them about the amount hes has eaten roughly 70g a day for about 23 days hes  a seal point rag doll so quiet a big cat ...... i just hope hes ok  and i have not done him any harm but after the shock of losing 1 cat after 6 days of finding out she had cancer . this is scaring me now..... he looks fine and jumping around the living room the now but i am never giving him any more of princes tuna chunks in spring water again after today....  only his normal food and water for now on... i feel like i cant do anything right ....   

:I am so sorry you lost your little friend.  Dont' beat yourself up for feeding the tuna...whats done is done.  You were following vet directions.

Please update when you can how the vet visit went.

thanks for your kind words Farleyv  ,       Alot better news today.... Elmo has been given a full bill of health and a boaster jag  ,.... i think i have just scared myself again .... Google can be great for that from now on tuna will not be on the menu ..... hes going to be fine and am a very happy now .... maybe in time a new friend for Elmo would be a good idea for a bit of company would boast his happyness .

Oh I am glad he is fine!  Google can be a blessing and a curse.

I hope all continues to go well, and welcome to the site! Yes, a new little friend might be just the thing!

thanks very much for the welcome i am glad to be a member this a wee great site  .....  yeah a wee friend  might just do be the turning point of this bad time for him ....  i am glad the vet was pleased with him . its a good feeling getting a bit of good news its defo a positvie boast in its self ...