Read the following context and choose the best option to answer the question.
Context: Luke 's fish died . Just before I was going to put the boys down for the evening , Wendy came upstairs and mentioned to me in a somber whisper , " Luke 's fish died . Should we tell him now , or should we wait till the morning ? " I could n't stand the idea of my son sleeping peacefully while his fish was belly up in the tank , so I said she better go tell him right away .
Question: How might the fish have met it 's untimely end ?
Options: 
- Natural causes , most likely .
 - None of the above choices .
 - A severe lack of water .
 - At the end of a fisherman 's hook .


Natural causes , most likely .