Shorefishes of the Eastern Pacific online information system

Español  Contact

Species: Letharchus rosenblatti, Black sailfin-eel

All Families:   All Genera:   All Species:

snout sharply pointed
D origin on head
dark brown
head mottled white
tail < 1/2 TL, tip hard, finless
no A

Letharchus rosenblatti McCosker, 1974

Black sailfin-eel

Elongate, compressed; tail 36-42% of TL; snout sharply pointed, overhanging, without groove on underside; eye small; front nostril a flat hole; rear nostril opens in mouth; gill openings entirely on underside, converging forward; gill chamber puffed out; teeth slender, pointed, single series on jaws and on roof of mouth, 2 rows at front between top jaws; tail with a hard, finless point; dorsal fin origin on nape, a short distance behind level of rear corner of mouth; no anal or pectoral fins.

Dark brown, nearly blackish, with front of head and snout white.

Largest reported, 35 cm.

Habitat: sandy and rocky bottoms.

Depth: 0-20 m.

The tip of Baja, Costa Rica to Ecuador.

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
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Sand & gravel
  • Soft bottom only
FishBase Habitat
  • Demersal
Feeding Group
  • Carnivore
  • No Data
  • Bony fishes
  • No Data
  • Mobile benthic crustacea (shrimps/crabs)
Egg Type
  • Pelagic
  • No data
  • Pelagic larva
Global Endemism
  • East Pacific endemic
  • Tropical Eastern Pacific (TEP) endemic
  • All species
Regional Endemism
  • All species
  • TEP endemic
  • Continent only
  • Continent
  • Continental TEP endemic
  • 3 provinces (Cortez + Mexican + Panamic) endemic
  • Resident
Climate Zone
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 35
Depth Range Min
  • 0
Depth Range Max
  • 20