Sicklefin Hound Shark

Hemitriakis falcata

Sharks and rays
IUCN: Least concern

Usual depth55–192 m
Water temperature25–29 °C
Best monthsMay and October
How commonRare

Photo credit: (c) CSIRO National Fish Collection, some rights reserved (CC BY) · CC BY · iNaturalist

About this species

The sicklefin houndshark is a rare houndshark of the family Triakidae, endemic to Western Australia. The holotype was collected from a depth of 150 metres (490 ft) Its reproduction is ovoviviparous.

Text from the Wikipedia article “Sicklefin houndshark”, licensed CC BY-SA 4.0. Read the article

Where and when

Where it has been recorded

Worldwide

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Best months

Worldwide (open data)

January: 1 records
February: 0 records
March: 0 records
April: 0 records
May: 14 records
June: 2 records
July: 0 records
August: 2 records
September: 5 records
October: 11 records
November: 1 records
December: 7 records

Depth and water temperature

Depth

Mostly recorded at 55–192 m · Deepest record: 197 m

30–40 m: 2 records
40–50 m: 0 records
50–60 m: 5 records
60–70 m: 1 records
70–80 m: 0 records
80–90 m: 0 records
90–100 m: 8 records
100–110 m: 1 records
110–120 m: 0 records
120–130 m: 7 records
130–140 m: 2 records
140+ m: 15 records

Water temperature

Recorded in surface water of 25–29 °C

24–26 °C: 19 records
26–28 °C: 15 records
28–30 °C: 9 records

Names and classification

English: Sicklefin Hound Shark

Names in 1 more languages

German: Sichelflossen-Hundshai

Similar species

Japanese topeshark
Hemitriakis japanica
Darksnout Houndshark
Hemitriakis abdita
Ocellate Topeshark
Hemitriakis complicofasciata
Indonesian Houndshark
Hemitriakis indroyonoi
whitefin topeshark
Hemitriakis leucoperiptera
Sweet william
Galeorhinus galeus

Sources and credits

Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).

Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
Conservation status as published by GBIF (IUCN Red List).
56 open-data records from 1978 to 2021.
Species data updated November 3, 2026.

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