Aw, I know how you feel. That's why we have a RIP thread in the forum for your fishes to be remembered. :(
I don't want to think about how many fishes I've lost. It's so sad. This is why we must educate newcomers! lol
I lost the only fish I've had, last September - a coral beauty angel. It died to due stress in a 10g tank while I was trying to move the 29g to a new house.
It's nearing a year that I've been trying to get a good tank up and running to become a great reef tank. Hopefully I will be able to get fish again soon...
I lost a sailfin tang to a newbie mistake a little over 10 years ago when i first started to get into saltwater. I didn't realize that salinity changed when the water got hotter, and I mixed my saltwater cold. Found him dead the next morning and checked my SG. Way to high needless to say.
In saltwater, two. A mandarin that I'd gotten from a less than reputable LFS (it was starved past saving). I'd also lost an algae blenny to the famous carpet surfing.
Fresh water....pfft. I tried keeping guppies, failed...epically
I lost a yellow tail blenny.He decided to go carpet surfing. I even had a canopy at that time.
Thankfully that has been my only loss in the two years Ive been in the salt water hobby.