order: squaliformes

Family: Squalidae (dogfishes)

Species: 3

FATSPINE SPURDOG

Squalus crassispinus (Last, Edmunds & Yearsley, 2007)

IUCN Status

IUCN Least Concern

BIOLOGY

Maximum size:            
Maturity size: 
        
Birth size:                      
Litter size:                    
Reproductive mode:     

 

At least 67 cm TL

Males at ~45 cm TL

Unknown

Unknown

Viviparous, with yolk-sac dependency

KEY FEATURES

  • Caudal fin without a terminal lobe

  • First dorsal fin slightly raked back

  • Snout short, bluntly pointed in ventral view

  • Caudal fin with a white posterior margin, without a dark bar near its fork

  • Spines in front of dorsal fins very broad based

  • Teeth similar in size and shape in both jaws

PAPUAN SPURDOG

Squalus cf. edmundsi

IUCN Status

IUCN NE logo.png

BIOLOGY

Maximum size: 

          
Maturity size: 
        
Birth size:                      
Litter size:                    
Reproductive mode:     

 

Unknown; only known from a 24 cm TL female

Unknown

Unknown

Unknown

Viviparous, with yolk-sac dependency

KEY FEATURES

  • Caudal fin without a terminal lobe

  • First dorsal fin tall and upright

  • Snout elongate, narrowly triangular in ventral view

  • Caudal fin with a dark bar on its lower lobe from ventral fin origin to the caudal fork; tips of upper and lower lobes white

  • Spines in front of dorsal fins slender; second slightly longer

  • Teeth similar in size and shape in both jaws

PHILIPPINE SPURDOG

Squalus montalbani (Whitley, 1931)

IUCN Status

IUCN VU logo.png

BIOLOGY

Maximum size: 

          
Maturity size:

          
Birth size:                      
Litter size:                    
Reproductive mode:     

 

Females 106 cm TL

Males 72 cm TL

Females at ~80 cm TL

Males at 56–67 cm TL

20–24 cm TL

4–16 pups

Viviparous, with yolk-sac dependency

KEY FEATURES

  • Caudal fin without a terminal lobe

  • First dorsal fin raked back

  • Snout moderately elongate, somewhat pointed

  • Caudal fin with a distinct dark bar above its fork extending onto upper lobe

  • Spines in front of dorsal fins slender and relatively short

  • Teeth similar in size and shape in both jaws

Sharks and rays of

papua new guinea

© 2019 Sharks and Rays of PNG 

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