Fish touristy restaurants originally included in meal? (5)
I believe the answer is:
tetra
'fish' is the definition.
(tetra is a kind of fish)
'touristy restaurants originally included in meal?' is the wordplay.
'originally' suggests taking the first letters.
'included in' indicates putting letters inside.
'meal?' becomes 'tea' (tea is a kind of meal).
The initial letters of 'touristy restaurants' is 'tr'.
'tr' put inside 'tea' is 'TETRA'.
(Other definitions for tetra that I've seen before include "Denoting four (prefix)" , "With four parts" , "Bright tropical fish" , "... Four < , in composition" , "This indicates a group of four" .)