fishy and crab died , and valentine

so my fishes died in a week of getting them :( the crab that i got at the same time pinich off  their tails) and i didn't have crab food , or the proper tank to take care of it , and it kill my fishes , mental note not put fishes in crab in the same place , so i plan of just getting fishes . and they will last longer then a week . cause i will not get a crab.  the day before valentine on the 13th i revive a valentine for someone that i not know who , but it made me happy