 The reticulate whipray preys on a variety of benthic and neritic organisms , including crabs , shrimps , mantis shrimps , bivalves , gastropods , worms , jellyfish , and bony fishes . In the western Indian Ocean , about two @-@ thirds of its diet consists of fishes , in particular ponyfish and anchovies , with shrimps and other crustaceans making up most of the remainder . By contrast , rays in Australian waters are apparently not piscivorous , and are known to consume penaeid prawns . Known parasites of this species include Anthrobothrium loculatum , Dendromonocotyle colorni , Halysiorhynchus macrocephalus , Monocotyle helicophallus , M. multiparous , and M. spiremae , Thaumatocotyle australensis , and Tylocephalum chiralensis . 
