Pseudotriakis microdon

De Brito Capello, 1868

False catshark
Classification: Elasmobranchii Carcharhiniformes Pseudotriakidae

Reference of the original description
de Brito Capello, F. (1868)
Descripção de dois peixes novos provenientes dos mares de Portugal. Jornal de Sciências Mathemáticas, Physicas e Naturaes, Lisboa, 1(IV), 314–322

Image of the original description

Pseudotriakis microdon De Brito Capello, 1868

Synonyms / new combinations and misspellings
Pseudotriacis microdon, Pseudotriakis acrages, Pseudotriakis acrales

Pseudotriakis microdon

Pseudotriakis acrales
Holotype: SU: 12903

Description :

Citation: Pseudotriakis microdon De Brito Capello, 1868: In: Database of modern sharks, rays and chimaeras,, World Wide Web electronic publication, Version 02/2024

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Pseudotriakis microdon De Brito Capello, 1868, © FAO,
Common names
deu \(T\) Atlantischer Falscher Marderhai, spa Falsa gata, spa Musolón aleta larga, spa Musolón de aleta, spa Musolón de aleta larga, fra \(T\) Requin à longue dorsale, eng False cat shark, eng False catshark, por Mamôna, por Mona, por Peixe-carago

Short Description
Lower lobe of caudal fin hardly developed, its upper edge not rippled and a subterminal notch present [20050]. Uniformly dark brownish-grey, darker on posterior edges of pelvic, dorsal, anal and caudal fins [20050].

Western Atlantic: New York and New Jersey, USA. Reported from Cuba [20078]; including Brazil (Ref. 53443). Northeast Atlantic: Atlantic slope off Iceland, France, Portugal, Madeira, Azores, Senegal, and Cape Verde. Indian Ocean: Aldabra Island group and Western Australia [20050]. Pacific Ocean: Japan, Taiwan, New Zealand, and Hawaii [20050]. Source:

Human uses
fisheries: subsistence fisheries

Exhibit ovoviparity (aplacental viviparity), embryos feed on yolk and ova, also consume uterine milk [733] with 2-4 young in a litter [20050] [2539]. Size at birth between 70 and 85 cm ([578] reports it at about 140 cm TL). Distinct pairing with embrace [17086].
Diet: [3667] (data: Eight males (2500-2950 mm TL), four females (1560-2960 mm TL), and six embryos (447-1201 mm TL) from the north Pacific were examined): False catsharks were found to feed predominantly on bony fishes. In north Pacific specimens, two had empty stomachs and one specimen had mud and chyme in the stomach. The others contained such varied items as sharks, bony fishes, fish skeletons and muscles, squid muscles and beaks, and octopi. The identified stomach contents included Etmopterus brachyurus, E. pusillus, Epinnula magistralis, Auxis rochei, Diodon holocanthus, Lagocephalus sceleratus, Gempylidae, Belonidae sp., and Macrouridae sp. Occurs on the continental slope (Ref. 75154).

Size / Weight / Age
269 cm TL (male/unsexed; [517]); 295 cm TL (female)

bathydemersal; marine; depth range 173 - 1890 m [17640]

shark-references Species-ID=5282;

Parasites (arranged by Jürgen Pollerspöck)
  • Grillotia dolichocephala (Guiart, 1935) [16112]
  • Sphyriocephalus viridis (Wagener, 1854) Pintner, 1913 [16112] [25091]

  • Politolana concharum (Stimpson, 1853) [23898]