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Species: Serranus aequidens, Deepwater serrano

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short snout
large eyes
body - 6 bars, 2nd with dark blotch on LL
C concave
opercle - large dark blotch
lower gill rakers 16

Serranus aequidens Gilbert, 1890

Deepwater serrano

Elongate, with a narrow tail base; head long; snout short; eye large (= snout); mouth large, reaches under rear edge of pupil; tip of lower jaw a little projecting; preoperculum finely serrated; gill rakers long & slender, ~ 16 lower rakers; dorsal X, 12, spines weak, flexible, low, increasing in length to the 4th  then decreasing to 9th; anal fin III,7, spines weak, 3rd  longest, ~ 2/3 length of 1st  ray, which is the longest; pectorals long and narrow, reaching from of anal fin; tail fin concave; scales large, rough, those on opercle largest; lateral line ~ 48 scales.

Head and body pale tan; throat and belly white; operculum with a large blue-grey blotch; about 6 irregular bars on upper body, last on base of tail, second bar with a dark blotch on lateral line above pectoral fin; spiny dorsal fin with whitish base, centers of membranes between spines blackish; second dorsal with whitish base,  blackish margin and blackish stripe along its base; pectoral and pelvic fins yellowish to whitish; tail and anal fins mainly clear. Juvenile;  preoperculum with small dark dots; operculum with a blue-white blotch containing a vertically elongate, blue-black mark; body with about 6 irregular faint bars, last on base of tail, second bar with a dark blotch on lateral line; dorsal fin with a dark central stripe; pectorals yellow; pelvics yellow, with black front edges; tail fin with upper and lower edge black.

Size: reaches 24.5 cm.

Habitat: lives on soft bottoms.

Depth: 75-265 m.

From southern California to the western Gulf of California; central Mexico to western Panama; the Galapagos and Cocos Island.

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  • Marine Only
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Bottom only
  • Mud
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Reef associated (reef + edges-water column & soft bottom)
  • Soft bottom only
  • Sand & gravel
FishBase Habitat
  • Bathydemersal
Feeding Group
  • Carnivore
  • No Data
  • No Data
  • Octopus/squid/cuttlefish
  • Bony fishes
  • Mobile benthic crustacea (shrimps/crabs)
Egg Type
  • Pelagic larva
  • No data
  • Pelagic
Global Endemism
  • All species
  • Tropical Eastern Pacific (TEP) endemic
  • East Pacific endemic
Regional Endemism
  • Continent
  • TEP endemic
  • Continent + Island (s)
  • Island (s)
  • All species
  • Resident
Climate Zone
  • North Temperate (Californian Province &/or Northern Gulf of California)
  • 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
  • 24.5
Depth Range Min
  • 75
Depth Range Max
  • 265