Shorefishes of the Eastern Pacific online information system

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Species: Calamopteryx jeb, Tailspot brotula

All Families:   All Genera:   All Species:

snout - papillae & flaps
stripe through eye, oblique bar on cheek
C: joined to D & A, pointed
belly: row white papillae

Calamopteryx jeb Cohen, 1973

Tailspot brotula

Body cylindrical, a little depressed; head compressed; eye small, elliptical, lateral; round fleshy snout, projecting a little beyond mouth; front nostril a stiff tube over top lip, rear nostril circular, a slightly raised rim; head with prominent papillae and raised flaps, especially on snout and lower head, and tip of top lip; 1 row small papillae along side of belly; operculum with 1 flat spine; lower edge of preopercle with curved forward pointing spine; tail compressed; tail fin elongate, 8-10 rays, continuous with dorsal and anal fins; anal 46-50 (usually 48-49) rays; dorsal 65-70 (usually 67-68) rays; pectoral fin a narrow ovoid, with an elongate stalk, with 15-19 (usually 17) rays; pelvics a pair of slender threads, inserted under operculum; body scaly - 75-80 in lateral series; scales on head except snout, around eyes and under mouth; a row of small papillae along side of belly; male with bilobed fleshy pad and penis immediately behind anus.

Yellow-brown to pale brown; dorsal and anal fins with brown band along bases and yellow outer sections; sometimes a faint dark stripe through eye and another from eye angled down across operculum; row of papillae on side of belly white; sometimes an indistinct dark spot at tail base.

Size: 6 cm.

Habitat: rocky shores.

Depth: 1-25 m.

Endemic to the Galapagos Islands.

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  • Marine Only
  • Marine
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom
  • Bottom only
  • Reef associated (reef + edges-water column & soft bottom)
  • Reef only
  • Reef (rock/coral/oyster)
  • Rocks
FishBase Habitat
  • Reef Associated
Feeding Group
  • Carnivore
  • No Data
  • Mobile benthic crustacea (shrimps/crabs)
  • No Data
  • Bony fishes
Egg Type
  • Pelagic larva
  • No data
  • Live birth
Global Endemism
  • Tropical Eastern Pacific (TEP) endemic
  • All species
  • East Pacific endemic
Regional Endemism
  • TEP endemic
  • All species
  • Island (s) only
  • Galapagos Islands endemic
  • TEP oceanic island (s) endemic
  • Island (s)
  • Resident
Climate Zone
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 6
Depth Range Min
  • 1
Depth Range Max
  • 25