| Common shovelnose ray | |
|---|---|
| |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| Superorder: | Batoidea |
| Order: | Rhinopristiformes |
| Family: | Glaucostegidae |
| Genus: | Glaucostegus |
| Species: | G. typus
|
| Binomial name | |
| Glaucostegus typus (Anonymous, referred to E. T. Bennett, 1830)[3]
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| Synonyms | |
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The common shovelnose ray, giant shovelnose ray or giant guitarfish[1] (Glaucostegus typus) is a species of fish in the Rhinobatidae family found in the central Indo-Pacific, ranging from India to the East China Sea, Solomon Islands and northern Australia.[1][3][4] It is found in shallow coastal areas to a depth of at least 100 m (330 ft), including mangrove, estuaries and reportedly also in freshwaters.[1][3][4] It reaches up to 2.7 m (8.9 ft) in length, and is greyish-brown to yellowish-brown above with a paler snout.[4]
This species has been tested for colour vision using choice experiments that control for brightness. It was the first rigorous behavioural evidence for colour vision in any elasmobranch.[5]