How to Identify False Killer Whale

To identify False Killer Whale (Pseudorca crassidens), look at these key features.

Physical Characteristics

Body shape

torpedo

Coloration

Entirely black or dark grey, sometimes with a lighter grey patch on the ventral side between the pectoral fins. The body is sleek and slender.

Scale type

none

Mouth position

terminal

Distinctive features

Slender, torpedo-shaped body, Conical head with no distinct beak, Prominent, S-shaped pectoral fins, Relatively small, falcate dorsal fin located midway along the back, Large, conical teeth (8-11 pairs in each jaw)

Dorsal fin

Relatively small, falcate (sickle-shaped) dorsal fin, positioned about one-third of the way back from the head.

Tail fin

Broad, notched fluke with pointed tips.

Pectoral fin

Long, slender, and distinctly S-shaped (or elbowed) pectoral fins, a key identifying feature.

Distinctive fins

The S-shaped pectoral fins are unique among cetaceans.

Identification Tips

1. 1

   Body Coloration

   Uniformly black or dark grey body, lacking any distinct white or light markings except for a possible faint grey patch on the belly.

2. 2

   Head Shape

   Conical head with no discernible beak, smoothly blending into the body.

3. 3

   Pectoral Fins

   Long, slender, and distinctly S-shaped or 'elbowed' pectoral fins are the most reliable field identification feature.

4. 4

   Dorsal Fin

   Relatively small, falcate dorsal fin, positioned centrally on the back.

5. 5

   Size

   Adults typically range from 4.3 to 6.1 meters (14-20 feet) in length and weigh between 1,000 and 2,200 kg (2,200-4,850 lbs).

6. 6

   Behavior

   Often seen in large, cohesive groups (pods) and are known for their acrobatic displays, including breaching and porpoising. They are also known to 'spyhop' and ride bow waves.

Explore False Killer Whale