Development of the Eggs and Larvae of the Pike Eel, Muraenesox cinereus.

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Embryonic and larval development of the pike eel, <I>Muraenesox cinereus</I>, are described following natural fertilization in the laboratory. Eggs are pelagic and spherical with diameters from 1.8 to 2.1mm and have a colorless, transparent chorion and numerous oil globules. Hatching occurs 36 hours after spawning at a water temperature of 25°C. Newly-hatched larvae are 5.8mm in mean TL, and the number of myomeres averages 86. Absorption of the yolk is completed 8 days after hatching, at 9-10mm TL. Larvae survive for 10 days without food supply. At this time they are 11.2mm in mean TL and have 97+55=152 myomeres, which is a diagnostic character of this species. They have large eyes and well-developed jaws with sharp teeth.
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