ARROWHEAD DOGFISH

Small shark in its genus with very small dermal denticles and large eyes

The Arrowhead Dogfish (Deania profundorum) is a small little known deepwater shark belonging to the family Centrophoridae. It is one of the smaller sharks of its genus.

 

Family: Centrophoridae – Gulper Sharks

Genus: Deania 

Species: profundorum

Taxonomy:

Phylum– Chordata

Class– Chondrichthyles

SubclassElasmobranchii

OrderSqualiformes

Common NameDogfish Sharks

Family– Centrophoridae

Common Name– Gulpher Sharks

GenusDeania

Speciesprofundorum

Status: IUCN Red List LEAST CONCERN

Average Size and Length: They are born just over 1 foot. Mature males are typically around 1.4 feet. Mature females are typically between 2-2.6 feet. The maximum recorded has been 3.2 feet.

Teeth and Jaw: The teeth in the upper and lower jaws differ. The teeth in the bottom jaw are larger, broader and are pointed to the side. The teeth in the upper jaw are smaller can come to a very straight and sharp point.

Head: The snout is extremely long and flat. The eyes are extremely large and closer to the snout tip than the first gill slit.

Denticles: The dermal denticles are small. They are around .25 mm long.

Tail: The Arrowhead Dogfish is the only shark of its genus with a subcaudal keel beneath the caudal peduncle.

Demographic, Distribution, Habitat, Environment and Range: Arrowhead Dogfish can be found in the east Atlantic from the Sahara to South Africa. In the west Atlantic they can be found in the Gulf of Mexico and Caribbean. In the Indo-west Pacific they can be found in South Africa, the Gulf of Aden and the Philippines. They can be found on or near the bottom of the upper continental and insular slopes between 902-5,856 feet. They ae considered bathydemersal.

Diet: They typically feed on small bony fish that are in midwater and the bottom. They also may eat crustaceans and squid.

Aesthetic Identification: The Arrowhead Dogfish is brown or dark grey in color. The first dorsal fin is relatively short and high. The second dorsal fin is much taller with a much higher fin spine. There is no anal fin.

Biology and Reproduction: The Arrowhead Dogfish is ovoviviparous. They typically have 7 pups per litter.

Behavioral Traits, Sensing and Intelligence: The Arrowhead Dogfish can sometimes be found in huge aggregations.

Arrowhead Dogfish Future and Conservation: They are not commercially of interest, but may be caught as bycatch.

Arrowhead Dogfish Recorded Attacks on Humans: Not a threat to humans.