FishBase
Larvae Information Summary for  Macruronus novaezelandiae
( not available )

Main Ref: Bruce, B.D. 1998
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm) 2.3 2.2    
Preanal L. % TL 44 31    
Place of development  
Larval area coastal waters of Tasmania
Yolk-sac spherical     Ref:  
Yolk unsegmented Oil globules one oil globule
Rows on tail dorsal row
Other melanophores on tail more than two dorso-ventral clusters or bands
Melanophores on head + trunk melanophores on head + trunk
Gut moderate and straight.
Post larvae
Striking feature none
Striking shape lateral short and/or deep dorsal tadpole-like
Striking feature none
Shape of gut spherical or gut loop
Gas bladder   early visible late visible
Spinal armature   early no spines late opercular spines only
Pigmentation early
Rows on tail dorsal + ventral + lateral row
Other melanophores on tail tail completely covered with melanophores
Melanophores on head + trunk melanophores on head + trunk
Pigmentation late
Rows on tail dorsal + ventral + lateral row
Other melanophores on tail tail completely covered with melanophores
Melanophores on head + trunk melanophores on head + trunk
Urostyle region   early pigmented late pigmented
Peritoneum covered with melanophores
Pectorals fin rays only without melanophores
Pelvics fin rays only without melanophores
Diagnostic characters: no head spines except for a single opercular spine by 22 mm; persistent gap between anus and origin of anal fin; large size at notochord flexion (greater than or equal to 20 mm); paired melanophore series dorsally on tail along either side of developing dorsal fin; usually 2 prominent melanophores ventrally along midtail until 15 mm. Sequence of fin development: pelvic (5.7-16.3 mm); dorsal (5.7-23.2 mm); anal (6.9-21.0 mm); caudal (10.4- > 34.2 mm); pectoral (22.0->34.2 mm). Body elongate to moderate. Mouth functional and eyes pigmented in reared larvae by 3.5-3.7 mm. Small villiform teeth along premaxilla by 7.2 mm. One opercular spine by 22 mm. Gut moderate, straight in yolk-sac larvae and coiled in preflexion larvae by 3.6 mm. Anus opens laterally to the right in larvae until 5.1 mm, becoming symmetrical about the ventral midline thereafter. Gas bladder over foregut by 3.5 mm, inflated and prominent. Prominent gap between anus and origin of anal fin, persisting after anal fin is formed.
Meristic characters
  max min mod Ref.
Total number of myomeres 81 78   33856
  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
Entered by: Luna,Susan M. - 26.04.00
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