| Family: |
Delphinidae (marine or true dolphins) |
| Max. size: |
260 cm TL (male/unsexed); 240 cm TL (female); max.weight: 120 kg |
| Environment: |
pelagic; marine; depth range 0 - 5300 m, oceanodromous |
| Distribution: |
Atlantic Ocean and Indo-Pacific: Stenella attenuata graffmani: Gulf of California and Colombia; Stenella attenuata subspecies A: Hawaii; Stenella attenuata subspecies B: Baja California Sur, Colombia. Tropical to temperate. |
| Diagnosis: |
|
| Biology: |
Major threats to this species is incidental catches specifically by tuna fishermen in the eastern Pacific, and as sustainable by-catch with the use of gillnets in the Pacific and northern Indian Ocean (Ref. 85211). Spends the majority of their day nearshore, often between 90 to 300 m (Ref. 122680 but they also frequent oceanic waters (Ref. 801). They move further offshore at night into deeper waters to search for prey (Ref. 122680). Feeds largely on epipelagic fish and squid (Ref. 1394). It associates with parasites such as nematodes, cestodes, trematodes and acanthocephalans and commensals that includes cyamids amphipod, and barnacles (Ref. 85211). Social groups are formed by a range of a few individuals to thousands. It is composed of cow-calf pairs, adults and juveniles and they are grouped together or separately by juveniles or breeding groups. Their school size varies within the day (Ref. 85211). |
| IUCN Red List Status: |
(LC); Date assessed: 05 April 2018 Ref. 123251)
|
| Threat to humans: |
|
| Country info: |
|
Source and more info: www.sealifebase.org. For personal, classroom, and other internal use only. Not for publication.
