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Larvae Information Summary for  Nematalosa erebi
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Main Ref: Puckridge, J.T. and K.F. Walker 1990
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm)        
Preanal L. % TL        
Place of development planktonic
Larval area River Murray, South Australia
Yolk-sac       Ref:  
Yolk segmented Oil globules  
Rows on tail no rows
Other melanophores on tail no other melanophores
Melanophores on head + trunk melanophores on head + trunk
The yolk-sac is largely absorbed by 3.5 mm TL. Pigmentation: After 6 mm TL, a single melanophore becomes obvious ventrally and immediately anterior to the cleithrum, and a pair of melanophores appears ventrally and immediately posterior to the cleithrum. A fine mid-ventral line of melanophores is visible along the hindmost two-thirds of the gut.
Post larvae
Striking feature duck-billed shape of head
Striking shape lateral eel-like dorsal tadpole-like
Striking feature duck-billed shape of head
Shape of gut tube-like
Gas bladder   early   late  
Spinal armature   early   late  
Pigmentation early
Rows on tail no rows
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 no other melanophores
Melanophores on head + trunk melanophores on head + trunk
Urostyle region   early unpigmented late unpigmented
Peritoneum with row of melanophores
Pectorals normal without melanophores
Pelvics normal (i.e. small or absent) without melanophores
Anterior migration of the anus and the dorsal and anal fins is noticeable at 17 mm TL. Scalation first appears along the lateral line at 26 mm TL and is complete by 35-40 mm TL. Sequence of fin development: caudal (3 mm TL); pectoral (3 mm TL); dorsal (7 mm TL); anal (11 mm TL); pelvic (16 mm TL).
Meristic characters
  max min mod Ref.
Total number of myomeres 45 44   6079
Preanal number of myomeres 39 38   6079
  L 1st feeding Ref. Months of presence of larvae
max 3.5 6079 Jan Feb Mar Apr
min   May Jun Jul Aug
mod     Sep Oct Nov Dec
Water parameters     Metric characters
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