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pdfA-SHOP Rockfish Species Identification Form
Observer:______________________________
Cruise:______________
Species common name: ______________________________________
Fork length:___________
Weight:_____________
Take photo!
Specimen collected? __________________
Permit:_____________
Haul #:____________
Describe color and patterns / markings: __________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
Head spine strength:
weak
strong
Peritoneum color: ___________________________
circle head spines present
Number of orbital spines: ____
Compare the second and third anal spine lengths:
___ Equal in length
___ 2nd anal spine extends beyond 3rd
___ 2nd anal spine falls short of 3rd
Symphyseal knob?
____ No
____Yes
If yes, describe: _______________________________
Describe field characteristics used to identify this fish to species: ____________________________
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_____________________________________________________________________________________
_____________________________________________________________________________________
Similar species:
Characteristics that differ from this species:
________________
__________________________________________________________________
________________
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________________
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________________
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Distinguishing markings on the body:
____ None
____ Bars above lateral line only
____ Dark spots or speckling
____ Bars extending below the lateral line
____ Highlighted lateral line
____ Black on branchiostegal membranes
Opercular markings:
____ None
____ Diffuse opercular blotch or smudge
____ Bars radiating from the eye
____ Distinct opercular blotch
Anal fin slant (natural swimming position):
___ Perpendicular
___Posterior slant
___ Rounded
___ Anterior slant
Draw the characteristics used to identify this species - use checklist:
Maxilla size, in relation to orbit
Symphyseal knob
Distinguishing markings and color patterns - dorsal and ventral
Opercular markings
Anal fin slant and anal spines relative to fin ray length
At-Sea Hake Observer Program, ver 2016
File Type | application/pdf |
File Title | RF ID form.indd |
Author | Cassandra.Donovan |
File Modified | 2016-03-23 |
File Created | 2016-03-23 |