Larvae Information Summary for Icichthys lockingtoni
Show available picture(s) for

Main Ref: Matarese, A.C., A.W. Kendall, D.M. Blood and M.V. Vinter 1989
Yolk-sac larvae
  min max mod Ref.
Length at birth (mm)        
Preanal L. % TL        
Place of development planktonic
Larval area Eastern Pacific (south of southern California to Gulf of Alaska, 54-60° N); Northwestern Pacific (Japan)
Yolk-sac       Ref:  
Yolk   Oil globules  
Rows on tail  
Other melanophores on tail  
Post larvae
Striking feature none
Striking shape lateral normal (not striking) dorsal  
Striking feature none
Shape of gut elongated
Gas bladder   early   late  
Spinal armature   early no spines late no spines
Pigmentation early
Rows on tail dorsal + ventral + lateral row
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head + trunk
Pigmentation late
Rows on tail no rows
Other melanophores on tail tail completely covered with melanophores
Melanophores on head + trunk melanophores on head + trunk
Peritoneum with row of melanophores
Pectorals normal  
Pelvics normal (i.e. small or absent)  
Distinguished from Tetragonurus cuvieri by: high myomere count (56-62); preflexion: dorsal body pigment over posterior half of body; only tail in T. cuvieri; flexion: no preopercular spines; postflexion: dorsal and anal spines weak, few (three) dorsal spines; more dorsal and anal fin rays than in T. cuvieri. Pigment: dorsal and ventral body midline pigment; lateral line dashes develop during flexion; head and tail pigment increases with development; become heavily, uniformly pigmented including fin membranes. Sequence of fin development: caudal, 2nd dorsal (rays), anal, pectorals, 1st dorsal (spines), pelvics.
  L 1st feeding Ref. Months of presence of larvae    < >Ref. 
max     Jan Feb Mar Apr
min   May Jun Jul Aug
mod     Sep Oct Nov Dec
Water parameters     Metric characters
Comments & Corrections

php script by kbanasihan, 09/07/10 ,  last modified by sortiz, 09/08/17