Shorefishes of the Eastern Pacific online information system

Español  Contact

Species: Mustelus whitneyi, Humpback smoothhound

All Families:   All Genera:   All Species:

body humped
top lip fold > bottom fold
distance between D bases 16-21% TL
center D1 base nearer pelvic than pectoral
D & C edges fibrous, dark
teeth pointed, triangular, asymmetric
flank denticles - elongate, 1 point
C: lower lobe - small concave extension

Mustelus whitneyi Chirichigno, 1973

Humpback smoothhound

Elongate, hunched body; snout long; eyes horizontal ovals, with ventral nictitating membranes; width between eyes = 4.5-5.6% of TL;  mouth large, angular; teeth high, triangular, pointed, asymmetric;  top lip folds notably longer than bottom folds;  5 gill slits, last 2 over pectoral fin base; 2 large dorsal fins, second slightly smaller than first; first dorsal broadly triangular, its mid-base nearer pelvic base than pectoral base; dorsal fins with rear fibrous edge; distance between dorsal fin bases 16-21% of TL; first dorsal behind pectoral, center of its base nearer pelvic base than pectoral base; anal fin smaller than and with origin under middle of second dorsal; tail strongly asymmetrical, lower lobe with slightly concave rear edge in adults; skin denticles on flank elongate, single-pointed ovals, canal along entire center.

Grey above, paler below; fibrous rear edge of dorsal and tail fins dark.

Size: 87 cm.

Habitat: rocky bottoms around islands.

Depth: 15-210 m.

Temperate SE Pacific; Panama to Chile.

High Resolution Map Download

Species Data Create Report Export as Word File Export as Excel File
  • Marine
  • Marine Only
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Bottom only
  • Mud
  • Reef associated (reef + edges-water column & soft bottom)
  • Rocks
  • Reef and soft bottom
  • Sand & gravel
  • Reef (rock/coral/oyster)
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
FishBase Habitat
  • Demersal
Feeding Group
  • Carnivore
  • Data
  • Mobile benthic gastropods/bivalves
  • Mobile benthic crustacea (shrimps/crabs)
  • Bony fishes
  • Data
Egg Type
  • Live birth
  • No data
  • No pelagic larva
Global Endemism
  • All species
  • TEP non-endemic
  • East Pacific endemic
Regional Endemism
  • All species
  • Peruvian province, primarily
  • Temperate Eastern Pacific, primarily
  • Tropical Eastern Pacific (TEP) non-endemic
  • Continent only
  • Continent
  • Resident
Climate Zone
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
  • South Temperate (Peruvian Province )
IUCN Red List
  • Vulnerable
  • Listed
  • Not listed
Length Max
  • 87
Depth Range Min
  • 15
Depth Range Max
  • 200