Which of the following are detrivores

carp,
prawn,
pondflies,
turtles,
dragonflies,
trout,
kingfisher,
waterbird,
frogs,
flycatcher,
watersnake,
snails,



i only know that snails definitely are, but im not sure about the others???


.

Pond flies, and prawns. The others are either predators or scavengers (scavengers are not thought of as detrivores as they feed on dead but not decomposing matter)