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Larvae Information Summary for  Arenigobius bifrenatus
( not available )

Main Ref: Neira, F.J., A.G. Miskiewicz and T. Trnski 1998
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm) 3.1      
Preanal L. % TL 54 50    
Place of development planktonic
Larval area upper Swan Estuary (WA)
Yolk-sac       Ref:  
Yolk   Oil globules  
Post larvae
Striking feature  
Striking shape lateral   dorsal  
Striking feature  
Shape of gut  
Gas bladder   early   late  
Spinal armature   early   late  
Diagnostic characters: melanophore ventrally at anus; internal pigment above anus; large melanophore on ventral midline of tail, between myomeres 18-21; no pigment on head, and dorsal and lateral surfaces of trunk and tail prior to settlement. Sequence of fin formation: caudal (3.1-6.4 mm); second dorsal (4.3-6.0 mm); anal (4.3-6.0 mm); pectoral (4.7-6.2 mm); pelvic (4.9-6.8 mm); first dorsal (6.0-6.8 mm). Larvae settle on the bottom between 7.4 and 10.0 mm BL.
Meristic characters
  max min mod Ref.
Total number of myomeres 26 26   33616
Preanal number of myomeres 10 10   33616
  L 1st feeding Ref. Months of presence of larvae
max     Jan Feb Mar Apr
min   May Jun Jul Aug
mod     Sep Oct Nov Dec
Water parameters     Metric characters
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