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Species: Prionotus ruscarius, Common searobin, Rough searobin

All Families:   All Genera:   All Species:

head high
large eye
short snout plates
C: 2-3 bars of spots
pectoral short & angular, center translucent, edges black
A: 10-11
flank: scales rough

Prionotus ruscarius Gilbert & Starks, 1904

Rough searobin, Common searobin

Head deep; wide and deeply concave between eyes; snout very wide, slightly projecting snout plates; no transverse groove across top of head behind eyes; 2 spines at rear of preopercular crest; spines on sides of snout and before & under eye stout, curved; teeth on jaws and roof of mouth simple; two separate dorsal fins, X (1st  spine with inner ¼ smooth to rough, next 2 spines smooth, 1st  2 spines about same length) + 10-12; anal fin with 10-11 rays; pectoral fin 13 rays,  relatively short (shorter than head, only reaching about to anus), rear margin angular at top, straight to slightly concave along rear edge, 3rd-4th  rays longest, 3 enlarged free rays at bottom are shorter than fin, topmost not reaching to tip of pelvic; tail slightly concave, top lobe slightly longer than bottom lobe; scales very rough on back and sides, smooth on breast, belly and nape; rear flap of operculum with scales; lateral-line scales 50-52.

Head and body olive brown above tinted with red, pale to white below;  body with two faint dark bars, one under 1st  dorsal, another under rear 2 of 2nd  dorsal; gill cavity blackish; dorsals translucent, 1st  with front tip blackish, 2nd  with dark rear base, blackish margin (except tips of rays); tail fin- 1-2 irregular vertical rows of dusky spots, rear third with white rays and black membranes; anal and pelvics clear; pectoral clear, with blackish to red-brown edges and base.

Size: 40 cm.

Habitat: sand-mud bottoms.

Depth: 4-107 m.

Lower Baja California and the northern and eastern Gulf of California to Chile.

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  • Brackish
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Bottom only
  • Soft bottom only
  • Mud
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Sand & gravel
FishBase Habitat
  • Demersal
Feeding Group
  • Carnivore
  • No Data
  • Mobile benthic crustacea (shrimps/crabs)
  • Zooplankton
  • Bony fishes
  • No Data
  • Pelagic crustacea
Egg Type
  • Pelagic
  • Pelagic larva
  • No data
Global Endemism
  • All species
  • Tropical Eastern Pacific (TEP) endemic
  • East Pacific endemic
Regional Endemism
  • Continent
  • All species
  • 3 provinces (Cortez + Mexican + Panamic) endemic
  • Continent only
  • TEP endemic
  • Continental TEP endemic
  • Resident
Climate Zone
  • Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)
  • Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo)
  • North Temperate (Californian Province &/or Northern Gulf of California)
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
  • South Temperate (Peruvian Province )
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 40
Depth Range Min
  • 4
Depth Range Max
  • 107