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This study aimed to describe development patterns and define length at juvenile of two co-occurring terapontid fishes. Terapon jarbua (n=366, 1.49-48.24 mm) and Pelates quadrilineatus (n=314, 1.64-54.13 mm) were collected from coastal area, Trang Province, Thailand. Specimens were divided into five developmental stages: preflexion larvae, flexion larvae, postflexion larvae, transforming larvae, and juvenile by study of morphometric character, meristic character and pigmentation pattern. The length at juvenile was defined by using a multivariate analysis of morphometric characters. The length at juvenile stage of T. jarbua and P. quadrilineatus began at 23.16 mm and 18.24 mm in standard length, respectively. All morphometric characters were significantly different (P |
