Shorefishes of the Greater Caribbean online information system

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Species: Cynoscion nothus, Silver Seatrout, Silver Weakfish

All Families:   All Genera:   All Species:

back: faint oblique dotted stripes
D 26-31, lower 1/2 covered with small scales
C straight/blunt point
inner lower teeth: rear larger, widely spaced
A 8-11
pectoral < pelvic
body scales large, rough, = / > LL scales

Cynoscion nothus (Holbrook, 1848)

Silver Seatrout, Silver Weakfish

Elongate and moderately compressed; mouth large, oblique, lower jaw slightly projecting; teeth in multiple rows with 2 large canines at tip of upper jaw, inner row of teeth on lower jaw widely spaced, enlarged, increasing in size to rear; gill rakers short, 11-15; no pores or barbels on chin; 2 pores on side of snout; preoperculum smooth; top corner of gill opening notched; dorsal rays X + I, 26-31; anal rays II (weak), 8-11; pectoral fins ½ head length, shorter than pelvic fins; rear margin of tail straight to with a blunt angular point below the midline; scales on body large and rough, equal to or larger than lateral line scales; soft dorsal with basal half scaled; lateral line arched anteriorly and straight well before level of anus, extends to the center of the end of the tail fin.

Body silvery grey; back sometimes with faint oblique irregular rows of spots along scale rows; dorsal dusky, other fins yellowish.

Size: reaches 40 cm.

Inhabits sand bottoms of estuaries and coastal areas.

Depth: 1-110 m.

Chesapeake Bay to the Gulf of Mexico.

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  • Brackish
  • Marine
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Sand & gravel
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Soft bottom only
  • Beach
  • Estuary
FishBase Habitat
  • Demersal
Feeding Group
  • Carnivore
  • Data
  • Planktivore
  • Data
  • Zooplankton
  • Bony fishes
  • Mobile benthic crustacea (shrimps/crabs)
  • Octopus/squid/cuttlefish
Egg Type
  • Data
  • Pelagic
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean non-endemic
  • West Atlantic Endemic
Regional Endemism
  • Continent
  • Continent only
  • Extends North of GC
  • GC non-endemic
  • All species
  • Resident
Climate Zone
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Temperate (>35N)
IUCN Red List
  • Least concern
  • Listed
  • Not listed
Length Max
  • 40
Depth Range Min
  • 1
Depth Range Max
  • 110