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Species: Notarius armbrusteri, Ñato sea-catfish

All Families:   All Genera:   All Species:

eye large
narrow between front nostrils
plate before D = narrow crescent
tail base depth > 7% SL
mouth narrow
top barbel short
gill rakers: 11-13 1st arch, 8-13 2nd arch
gill openings wide
A 19-23

Notarius armbrusteri Betancur & Acero, 2006

Ñato sea-catfish

Top of head flat; snout projecting slightly, rounded when viewed from above; eyes large (4.3-4.9% of SL); bony head shield densely covered with small granules from level of eyes back; central head groove broad, shallow; bony nape process short, keeled, slightly convex, epioccipital bone at its front edge not expanded; narrow between front nostrils (distance 6.1-6.9% of SL); mouth small (width 11.1-11.8% of SL), lips thin to moderately thick; roof of mouth with 4 patches of teeth, front pair rectangular, longer than wide, joined in center, side pair broader, triangular, pointed at rear, with an indentation into which central pair fits; top barbells short (20.5-22.2% of SL); lower jaw barbels 14.1-17.1% of SL; gill opening wide, membranes not adhering to breast; gill rakers 11-13 on first arch, 12-13 on second arch, no rakers on rear surface of either arch; bony plate in front of dorsal fin narrowly crescent-shaped; dorsal fin I,7, its base long (11.2-12% of SL), its spine thin and long (21.1-22.5% of SL); anal rays 19-23; pectoral rays I,11-12, spine thin, long, slightly serrated on rear edge; tail base relatively deep (7.0-7.4% of SL); tail fin deeply forked, upper lobe longer.

Brownish grey with metallic tinges above; white below; lower tip of tail and tip of anal fin dark; pectoral and pelvics dark, with white tips.

Reaches 25.4 cm.

Habitat: soft bottoms?

Depth: 0- 25 m?

Known only from southern Colombia.

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  • Marine
  • Brackish
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Bottom only
  • Soft bottom only
  • Estuary
  • Mud
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
FishBase Habitat
  • Demersal
Feeding Group
  • Carnivore
  • No Data
  • Mobile benthic worms
  • Mobile benthic crustacea (shrimps/crabs)
  • No Data
  • Bony fishes
  • Mobile benthic gastropods/bivalves
Egg Type
  • No pelagic larva
  • No data
  • No pelagic phase
  • Brooded
Global Endemism
  • Tropical Eastern Pacific (TEP) endemic
  • All species
  • East Pacific endemic
Regional Endemism
  • TEP endemic
  • Continent only
  • Continental TEP endemic
  • Panamic province endemic
  • All species
  • Continent
  • Resident
Climate Zone
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
IUCN Red List
  • Listed
  • Data deficient
  • Not listed
Length Max
  • 25.4
Depth Range Min
  • 0
Depth Range Max
  • 30