Yamatos are translucent with red/brown dashed lines running along their sides, from head to tail.
Malayan are brown, opaque or almost opaque and have distinct a white/light brown stripe running down its back.
Feeder shrimp are colourless and have no distinct markings. Usually very cheap and kept in tubs or pre-packed and not in display tanks.
Freshwater Shrimp in the Aquarium
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