Shorefishes of the Eastern Pacific online information system

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Species: Stellifer mancorensis, Fat stardrum, Smooth stardrum

All Families:   All Genera:   All Species:

body robust
head spongy
preopercle: soft,membranous teeth
A: 2nd spine short, 12-13

Stellifer mancorensis Chirichigno, 1962

Smooth stardrum, Fat stardrum

Body oblong, moderately high, more or less compressed; head large, broad, skull cavernous, translucent, spongy to touch, wide between eyes; snout blunt, projecting slightly beyond upper jaw; mouth opens almost at front, slight oblique; teeth in villiform bands, those in outer row of upper jaw enlarged; chin with 6 pores, a knob at front, no barbells; snout with 8 pores; margin of preopercle without spines, membranous, with soft teeth; gill rakers long and slender, 19-21; dorsal rays XII + III, 18-19, deep notch between spiny and soft parts of dorsal fin; anal fin with short base II, 12-13, 2nd  spine strong, < ½ length of 1st  ray; pelvic fins with a filament; tail margin with short blunt point ; scales rough on body, smooth on breast, head and fins; soft dorsal and anal fins covered with smooth scales; lateral line pores 44-47.

Silvery brown; median fins pale yellowish brown; pectorals clear to dark; inside mouth pale; roof of gill chamber dark - visible from outside as dark blotch.

Size: 20 cm.

Habitat: coastal bays, on mud and sand bottoms.

Depth: 1-40 m.

El Salvador to Peru.

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  • Marine
  • Brackish
  • Inshore
  • Inshore Only
Water Column Position
  • Water column only
  • Near Bottom
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Sand & gravel
  • Soft bottom only
  • Water column
FishBase Habitat
  • Demersal
Feeding Group
  • No Data
  • Carnivore
  • Planktivore
  • Zooplankton
  • Pelagic fish larvae
  • Mobile benthic worms
  • Pelagic fish eggs
  • No Data
  • Mobile benthic crustacea (shrimps/crabs)
  • Mobile benthic gastropods/bivalves
Egg Type
  • No data
  • Pelagic larva
  • Pelagic
Global Endemism
  • All species
  • Tropical Eastern Pacific (TEP) endemic
  • East Pacific endemic
Regional Endemism
  • Panamic province endemic
  • Continent
  • TEP endemic
  • Continent only
  • All species
  • Continental TEP endemic
  • Resident
Climate Zone
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Depth Range Max
  • 40
Depth Range Min
  • 1
Length Max
  • 20