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Pleuronectiformes - Pleuronectidae

Psettichthys melanostictus (Sand Sole)

Illustration Meristics Life History ELH Descr. Distribution Footnotes
More information for this taxon at: LarvalBase | FishBase | Univ. Washington Data

EGG INFORMATION

Egg Diameter (min-max in mm): 0.82 - 1.04
Number of Oil Globules (min-max):
Oil Globule Diameter (min-max in mm):
Yolk: Clear
Chorion:
Egg/Embryo Pigment: head, yolk, dorsal, lateral, finfold, notochord tip,
Pigment Diagnostics: Distinguished from other 1.0 mm pleuronectid eggs by: usually pigment on yolksac (may appear as early as late middle stage) and in later stages on finfold
Diagnostic Characters: Usually pigment on yolksac and in later stages on finfold; very difficult to distinguish from the 3 other 1.0-mm pleuronectid eggs in the area:
Isopsetta isolepis, Parophrys vetulus, Platichthys stellatus

LARVAE INFORMATION

Hatch Size (min-max in mm SL): 2.1-3.0
Preanal Length (%SL): <50
Flexion Length (in mm SL): ~8 - 10
Length at Transformation (in mm SL): 13.9 - 14.2 through 20.9 - >22.6
Fin Development Sequence: Caudal, dorsal and anal, pelvics, pectorals
Larval Pigment Regions: In each developmental larval stage, pigment is present in the regions listed below
(click for pigment regions)
Yolk-sac: yolk, mouth, crown, nape, cheek, dorsal gut, lateral gut, ventral gut, dorsal finfold, anal finfold, dorsal, ventral, mediolateral, caudal,
Preflexion: mouth, crown, cheek, isthmus, dorsal gut, lateral gut, ventral gut, dorsal finfold, anal finfold, caudal finfold, dorsal, ventral, mediolateral, caudal,
Flexion: mouth, crown, cheek, isthmus, dorsal gut, lateral gut, ventral gut, dorsal finfold, anal finfold, caudal finfold, dorsal, ventral, mediolateral, caudal,
Postflexion: mouth, isthmus, dorsal gut, lateral gut, ventral gut, dorsal finfold, anal finfold, caudal finfold, dorsal, ventral, mediolateral, caudal,
Juvenile:
Pigment Diagnostics: Distinguished from other pleuronectids with pigment bands by: distinctive pigment along edges of dorsal and ventral finfolds and dorsal and ventral body midlines
Diagnostic Characters: Distinguished from other pleuronectids with pigment bands by: distinctive pigment along edges of dorsal and ventral finfolds and dorsal and ventral body midlines


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last updated: June 2021