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Scorpaeniformes - Scorpaenidae

Sebastolobus altivelis (Longspine Thornyhead)

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): 1.14* - 1.3
Number of Oil Globules (min-max): 1*
Oil Globule Diameter (min-max in mm): 0.2*
Yolk:
Chorion:
Egg/Embryo Pigment: head,
Pigment Diagnostics:
Diagnostic Characters: Distinct perivitelline space; late stage embryo develops postanal bar pigment*

LARVAE INFORMATION

Hatch Size (min-max in mm SL): 2.6*
Preanal Length (%SL): <50, with development increasing to 50 - 75*
Flexion Length (in mm SL): 6 - 7.5*
Length at Transformation (in mm SL): 14 - 20*
Fin Development Sequence: Pectorals; caudal; dorsal, anal, and pelvics*
Larval Pigment Regions: In each developmental larval stage, pigment is present in the regions listed below
(click for pigment regions)
Yolk-sac:
Preflexion:
Flexion:
Postflexion: mouth, crown, cheek, dorsal gut, lateral gut, ventral gut, dorsal finfold, pectoral fin,
Juvenile: mouth, crown, nape, cheek, isthmus, dorsal gut, lateral gut, ventral gut, dorsal finfold, anal finfold, caudal finfold, pectoral fin, dorsal, ventral, mediolateral, caudal,
Pigment Diagnostics: Genus distinguished from Melamphaes lugubris at sizes < 5 mm SL by: postanal pigment band more posterior beginning about myomere 20; pelagic juveniles distinguished from Sebastolobus alascanus by: black shield on body and pectoral fins that extends posteriorly with growth
Diagnostic Characters: <10.0 mm SL: not separable to species; >10.0 mm SL: more robust, longer, and with more pectoral rays than Sebastolobus alascanus. Distinguished from Melamphaes lugubris at sizes <5 mm SL by: postanal pigment band more posterior beginning about myomere 20, pelvic fin not precocious in Sebastolobus spp.


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last updated: August 2019