Abstract
The development of eggs and larvae of the large-dark type B and that of larvae of the cross-band type of Rhinogobius brunneus were observed.Newly hatched larvae of both types were different in total length and also in the position of the anus.Some variations in the pigmentation of melanophores were observed in the larval development of the cross-band type.The larvae of the large-dark type B reached the juvenile stage and wholly abandoned their planktonic mode of life in 32 days after hatching at 21.0-27.5°C.Those of the cross-band type did so in 36 days after hatching at 19.9-22.8°C.
