FishBase
Larvae Information Summary for  Eucinostomus argenteus
( not available )

Main Ref: Watson, W. 1996
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)        
Preanal L. % TL        
Place of development  
Larval area California Current Region
Yolk-sac       Ref:  
Yolk   Oil globules  
Rows on tail  
Other melanophores on tail  
Post larvae
Striking feature  
Striking shape lateral   dorsal  
Striking feature  
Shape of gut spherical or gut loop
Gas bladder   early pigmented late pigmented
Spinal armature   early no spines late opercular spines only
Pigmentation early
Rows on tail ventral row
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head
Pigmentation late
Rows on tail ventral row
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head + trunk
Urostyle region   early unpigmented late pigmented
Peritoneum with row of melanophores
Myomeres 24 (5-6 preanal through mid-flexion, increasing to 8-9 in postflexion stage); no spines on head through flexion stage, then few very small preopercular spines in postflexion stage; slender larvae with short, coiled gut; lightly pigmented. Pigmentation: Preflexion: External pair usually present posteriorly over midbrain after 2.4 mm, always present after 3 mm; dorsally on gas bladder and hindgut; anteriorly on gut after 2.4 mm; 1 each anteriorly and posteriorly on ventral margin of gut; 18-20 on ventral margin of tail (about 1/myomere), decreasing to 12-13 beginning at postanal myomere 3-5 by end of stage. Flexion: Internal pair dorsolaterally on hindbrain after 4.7 mm; 2nd external pair over midbrain at 4.8 mm; 0-1 at upper end of preopercle after 4.5 mm; 1 on isthmus at cleithral symphysis at 4.6 mm; 2 posteriorly on dorsal margin after 4.6 mm; decreasing to 6-8 on ventral margin of tail; 2-4 on hypural margin. Postflexion: Increasing over midbrain and internally on mid- and hindbrain; over forebarin at 9.8 mm; at tip of snout by 11.5 mm; increasing on gas bladder and gut; 4 on isthmus by 11.5 mm; series forming along anal and second dorsal bases. Sequuence of fin development: principal caudal fin rays, second dorsal and anal fin rays, pectoral, first dorsal and pelvic and procurrent caudal fin rays.
Meristic characters
  max min mod Ref.
Total number of myomeres     24 41568
Preanal number of myomeres 9 8   41568
  L 1st feeding Ref. Months of presence of larvae
max     Jan Feb Mar Apr
min   May Jun Jul Aug
mod     Sep Oct Nov Dec
Similar species 1 13728Eucinostomuscurrani
Remarks
Similar species 2 Eucinostomusentomelas
Remarks
Water parameters     Metric characters
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