FishBase
Larvae Information Summary for  Cnidoglanis macrocephalus
( not available )

Main Ref: Neira, F.J. 1998
Yolk-sac larvae
  max min mod Ref.
Length at birth (mm) 28.5 27    
Preanal L. % TL 44 33    
Place of development in closed nest (e.g. burrow or tunnel)
Larval area Wilson Inlet (WA)
Yolk-sac ovoid   pigmented Ref:  
Yolk   Oil globules  
Rows on tail no rows
Other melanophores on tail tail partly covered with melanophores
Melanophores on head + trunk melanophores on head + trunk
Head small. Eyes laterally positioned (Ref. 33840). Four pairs of mouth barbels, and presence of dendritic organ posterior to anus, at hatching (Ref. 33840). Large yolk sac at hatching resorbed by settlement (Ref. 33840). Pectoral and pelvic fin buds present, and median fins nearly formed at hatching (Ref. 33840).
Post larvae
Striking feature none
Striking shape lateral eel-like dorsal compressed
Striking feature none
Shape of gut spherical or gut loop
Gas bladder   early   late  
Spinal armature   early   late  
Pigmentation early
Rows on tail no rows
Other melanophores on tail tail partly covered with melanophores
Melanophores on head + trunk melanophores on head + trunk
Pigmentation late
Rows on tail no rows
Other melanophores on tail tail partly covered with melanophores
Melanophores on head + trunk melanophores on head + trunk
Urostyle region   early pigmented late pigmented
Peritoneum without melanophores
Pectorals normal with few scattered melanophores
Pelvics fin rays only with melanophores
Diagnostic characters: first dorsal fin, and confluent second dorsal, caudal and anal fins nearly formed at hatching; large yolk sac at hatching; protruding dendritic organ just posterior to anus; four pairs of barbels around mouth. Sequence of fin development: caudal prior to hatching; anal prior to hatching; first dorsal prior to hatching; second dorsal (-34.0 mm); pectoral (28.5-34.0 mm); pelvic (28.5-34.0 mm). Eyes dorsally positioned by settlement stage (Ref. 33840).
Meristic characters
  max min mod Ref.
Total number of vertebrae 78 77   33840
  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. - 20.04.00
Modified by: Luna,Susan M. - 24.04.00
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