Abstract
Repomucenus beniteguri eggs were obtained from spawners reared in a tank, and the larvae raised to the juvenile stage. The eggs measured 0.64-0.72mm in diameter and shared characteristics in common with those of congeneric species. Hatching took place over 19 hours at 23.3-23.6°C. The newly-hatched prolarvae measured 1.18±0.026 mm in total length (TL) and had a large oval yolk sac. Spinous processes and vacuoles had appeared on the dorsal and ventral finfolds in a 1.92 mm, one-day-old prolarva. Yolk absorption was completed in a 2.39mm, 6-day-old postlarva. Notochord flexion had started in a 4.42mm postlarva and was completed in a 5.7mm juvenile. Initial transition to a demersal habit was observed in a 5.7mm juvenile and completed in a 12.8mm juvenile. Relative growth rates changed at ca. 2mm, 4.5-6.5mm and 11-13mm TL, dividing the early developmental stages into 4 phases: prolarval, postlarval, juvenile and adult. Some differences in previously reported embryonic and larval development in this species were found
