Early developments of fins and scales in laboratory-reared redlip mullet Liza haematocheila was studied using specimens stained with alizarin red. Larvae and juveniles were reared for about eighty days (ca. 3 mm-4 cm TL) by feeding with rotifers cultured with Nannochloropsis sp., Artemia nauplii and commercial artificial diets. The rearing was carried out in 1kl polycarbonate tanks at the water temperature ranging 16.1-27.7℃. The segmentation of soft rays in each fin occurred during the transitional period from larval to juvenile stage. The branching of paired fins was almost simultaneous with the segmentation of soft rays, but that of unpaired fins took place afterwards. The squamation began at about 10 mm TL, along the mid-lateral line of the back of the trunk. The fish body covered with scales except for the portion of head by 14-15 mm TL that almost corresponded to the completion of fin segmentations. The relationship between the scale diameter (SD) and the total length (TL) was described as follows: SD=0.027TL^< -0.054> (r=0.988) The number of grooves in scale reached almost a constant (5-8) by the size of 45 mm TL. The number of ridges in scale increased with growth just like that of the scale diameter. The relationship between the ridge number of the scale (RN) and the total length (TL) was described as follows: RN=0.753TL^< -8.067> (r=0.980) Also there appeared a big change in scale shape when fish reached at the size of 25-30mm TL, that correspondent to the transitional period to young.