Beige catshark

{{Short description|Species of shark}}

{{Speciesbox

| image = Parmaturus bigus.jpg

| image_caption = Preserved holotype of a female Dichichthys bigus

| image2 =

| image2_caption = Underwater images of Dichichthys bigus (adult male ~610 mm TL) from the ROV SuBastian at 838–881 m depth

| status = DD

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Kyne, P.M. |author2=Cavanagh, R.D. |author3=Valenti, S. |date=2016 |title=Parmaturus bigus |volume=2016 |page=e.T42718A70709684 |doi=10.2305/IUCN.UK.2016-1.RLTS.T42718A70709684.en |access-date=13 November 2021}}

| taxon = Dichichthys bigus

| authority = (Séret & Last, 2007)

| synonyms = * Parmaturus bigus Séret & Last, 2007

}}

{{Portal|Sharks}}

The beige catshark (Dichichthys bigus),{{Cof genus|genus=Dichichthys|access-date=25 October 2024}} or beige bristle shark, is a bristle shark of the family Dichichthyidae, The first recorded specimen was a female recorded off the coast of Queensland, Australia around Lord Howe Island. Its length was 72 cm.

Recently, a number of both male and female specimens (unpublished data) were captured in the waters off New Zealand, at the edge of the EEZ (exclusive economic zone). In 2024, the first footage of this shark was captured by the ROV SuBastian during Coral Sea surveys at Southern Small Detached Reef, Queensland.{{cite web |last1=White |first1=William T. |last2=Stewart |first2=Andrew L. |last3=O'Neill |first3=Helen L. |last4=Naylor |first4=Gavin J. P. |title=Dichichthyidae, a New Family of Deepwater Sharks (Carcharhiniformes) from the Indo–West Pacific, with Description of a New Species |url=https://www.mdpi.com/2410-3888/9/4/121 |website=MDPI |access-date=28 March 2024}} To date, very little is known about the ecology of this species. Scientists are currently studying the sensory systems of this catshark in order to reveal information about its ecology and ultimately behaviour. The reproduction of the beige catshark is oviparous.