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Species: Roncador stearnsii, Spotfin croaker

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oblong
snout blunt, overhangs horizontal mouth
pectoral base: black blotch
A: 8, 2nd spine slender, 3/4 1s ray
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This Species (4) This Genus (1) Similar Species (6)

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Roncador stearnsii (Steindachner, 1876)

Spotfin croaker

Body elongate, high; mouth under overhanging snout; snout with 10 pores; chin with 5 pores, no barbels;  jaw teeth simple, in bands; throat with plates of heavy, molar-like teeth; 24-28 gill rakers; preopercle finely serrated; dorsal low,  X + I, 24-28, deep notch between spiny and soft parts; anal with II spines, 2nd  spine slender, ~ ¾ length 1st  ray, 8; pectoral longer than pelvic; tail edge ~ straight; all scales rough; soft dorsal and anal without scales; 48-54 lateral line scales.

Blue grey to metallic grey above, sides brassy, belly pale silvery grey; sides with faint undulating lines along scale rows; pectoral fin with large black blotch on outer base, dark inner base; gill chamber blackish.

Size: 68.6 cm.

Habitat: demersal on sandy bottoms of bays, in surf zone, often near rocks.

Depth: 1-22 m.

California to the tip of Baja and the eastern Gulf of California.

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Salinity
  • Marine Only
  • Marine
Inshore/Offshore
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom
  • Bottom only
Habitat
  • Reef associated (reef + edges-water column & soft bottom)
  • Sand & gravel
  • Soft bottom only
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
FishBase Habitat
  • Demersal
Feeding Group
  • Data
  • Carnivore
Diet
  • Mobile benthic gastropods/bivalves
  • Data
  • Mobile benthic worms
  • Mobile benthic crustacea (shrimps/crabs)
Egg Type
  • No data
  • Pelagic
  • Pelagic larva
Global Endemism
  • TEP non-endemic
  • East Pacific endemic
  • All species
Regional Endemism
  • Tropical Eastern Pacific (TEP) non-endemic
  • Continent only
  • All species
  • California province, primarily
  • Continent
  • Temperate Eastern Pacific, primarily
Residency
  • Vagrant
Climate Zone
  • Northern Subtropical (Cortez Province + Sinaloan Gap)
  • North Temperate (Californian Province &/or Northern Gulf of California)
IUCN Red List
  • Least concern
  • Listed
CITES
  • Not listed
Length Max
  • 68.6
Depth Range Min
  • 1
Depth Range Max
  • 22