40d track and field event held as olympic sport since 1896; also a type of amazonian aquarium fish. 6 letters. I have it starting with the d of guide and having the u of croupier at letter 5
All field event come under Track and Field- know this as a big Athletics fan :-). Did the crossword on Saturday + posted Sunday hence hesitation. Thought it was Discus on Saturday yet had to check out the fish part of the clue as did just know ( have a short term memory like the John Dory fish in Finding Nemo ;-) ) You are most welcome Borderreiver, too. By the way, Rollo is one of the loveliest posters here :-) Warm wishes, Bea :-)
Meant to have said Field Events- sorry for leaving out the S!
Never heard of that word Borderreiver- Discombobulated, my gosh - thanks for that, must look that one up now :-) as love learning new words :-)
Hugs to you and to Rollo, Bea :-)