Table 1. Development of the second dorsal fin spine in red spotted grouper, Epinephelus akaara

Day after hatching	Total length(mm, mean±SE)	Second dorsal fin(μm, mean±SE)
		Barb number	Spinule number	Barb length	Spinule length
13 (n=5)	4.2±0.1	7.8±2.7	2.4±0.9	9.5±2.3	2.5±1.4
20 (n=4)	6.1±0.1	25±2.7	25.8±2.4	50.4±6.0	27.1±1.7
30 (n=3)	12.6±0.9	27±1.4	23.3±2.8	67.5±3.7	16.3±2.8
39 (n=3)	20.3±3.1	22.7±3.7	13±4.6	45.8±3.7	34.5±11.1
72 (n=5)	56.0±0.2	0	0	0	0