Eridacnis radcliffei

Smith, 1913

Pygmy ribbontail catshark
Classification: Elasmobranchii Carcharhiniformes Proscylliidae

Reference of the original description
Smith, H.M. (1913)
Description of a new carcharioid shark from the Sulu Archipelago. Proceedings of the United States National Museum, 45, 599–600

Image of the original description

Eridacnis radcliffei Smith, 1913

Synonyms / new combinations and misspellings
Eridacnis cf. radcliffei, Eridacnis radcliffi, Proscyllium alcocki

Eridacnis radcliffei
Holotype: USNM: 74604; Paratype: USNM: 317570;
Proscyllium alcocki
Holotype: ZSI: F229/1; Paratype: ZSI: F382/1;

Description :

Citation: Eridacnis radcliffei Smith, 1913: In: Database of modern sharks, rays and chimaeras,, World Wide Web electronic publication, Version 02/2024

Please send your images of "Eridacnis radcliffei" to

Eridacnis radcliffei Smith, 1913, © FAO,
Common names
spa Tollo coludo pigmeo, fra \(T\) Requin chat pygmée, fra \(T\) Requin-chat pygmé, eng Pygmy ribbontail cat shark, eng Pygmy ribbontail catshark

Short Description
Caudal fin without a rippled dorsal margin and ventral lobe but with a strong subterminal notch; vertebral axis of caudal fin little raised above body axis [544]. Dark brown with blackish markings on dorsal fins [544].

Indo-West Pacific: widely distributed but with spotty records from Tanzania, the Gulf of Aden, India (Gulf of Mannar, Bay of Bengal), Andaman Islands, Viet Nam, and the Philippines. The immense range of this species is striking compared to the limited ranges of other members of the genus. Source:

Ovoviviparous, embryos feed solely on yolk [733]. 1-2 pups per litter, size at birth about 11 cm [517]. Feed (database 484 individuals): primarily crustaceans (74,2%, mostly Aristeus spp., Ophlophorus spp., P. quasigrandis and Heterocarpus spp), fish remains (23,4%) [16508];

Size / Weight / Age
23.0 cm TL (male/unsexed; [517]); 24 cm TL (female)

bathydemersal; marine; depth range 71 - 766 m [20047]

shark-references Species-ID=2148;