Rhynchohyalus

Rhynchohyalus
Conservation status
	Not evaluated (IUCN 3.1)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Argentiniformes
Family:	Opisthoproctidae
Genus:	Rhynchohyalus; Barnard, 1925
Species:	R. natalensis
Binomial name
	Rhynchohyalus natalensis; (Gilchrist & von Bonde, 1924)

Rhynchohyalus natalensis, the glasshead barreleye, is a species of barreleye found in oceans around the world at depths from 247 to 549 metres (810 to 1,801 ft). This species grows to a length of 16 centimetres (6.3 in) SL. It and the brownsnout spookfish are the only vertebrates known to employ mirrors, in addition to lenses, to focus the images in its eyes. This fish, apart from it's fluid filled dome and it's mirrors, has 4 eyes that can see in 360°.

References

Froese, Rainer; Pauly, Daniel (eds.) (2012). "Rhynchohyalus natalensis" in FishBase. February 2012 version.

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