'find fish' command can't find the pets with the species field containing fish

[yyutong]

Functionalitity tested: 'find'
comment typed: find fish

Expecting Nemo with species of Clownfish to be selected and shown, however, there is no result found and shown.

On the other hand, if type in 'find boa', pets with species name containing 'boa' could be found.