Main Ref.	Trono, G.C. Jr., 2001
Appearance refers to

Sex attributes

specialized organs
different appearance
different colors
remarks

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Diagnose	Thalli erect, cartilaginous, greenish purple, with a discoid holdfast. Primary and secondary branches prominent, mostly arcuate, terete throughout, slightly constricted at the base. Branching on the main axes generally secund. Terminal branches giving rise to 2 or 3 short, stubby, spinose branchlets at their distal portions. Thalli up to 10 cm in height (Ref. 80758).
Ease of Identification

Meristic characteristics of Gracilaria arcuata

Lateral Lines	Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
totaal
Wervels
preanal
totaal

Fins

Dorsal fin(s)

Attributes
Fins number
Finlets No.	dorsaal
	Ventral
Spines total
Soft-rays total
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral	Attributes
	spines
	soft-rays
Pelvics	Attributes
	Position
	spines
	soft-rays