Limnichthys fasciatus, the barred sand burrower, is a species of sandburrower.

The fish preys on plankton prey by surprise attacking it from a hiding in loose sand,[3] with only the eyes protruding from the sand.

[6] The cornea can focus, which allows the fish to have depth perception without moving its head.

[2] Its eye is also notable for its high density of retinal ganglion cells compared to other species of fish.

[5] Because of the rapid and accurate attack on prey, it is assumed the fish has good eyesight.