Table 2. Development of the pelvic fin spine in red spotted grouper, Epinephelus akaara Pelvic fin (μm, mean±SE)

Day after hatching	Total length(mm, mean±SE)	Pelvic fin (μm, mean±SE)
		Barb number		Spinule number		Barb length		Spinule length
		Ridge1	Ridge2	Ridge3	Ridge4	Ridge1	Ridge2	Ridge3	Ridge4
13 (n=5)	4.2±0.1	3.2±1.6	6.8±2.0	1.2±1.1	0	7.98±2.3	7.94±2.1	1.0±0.9	0
20 (n=4)	6.1±0.1	12.3±2.3	14.3±0.9	19.3±2.5	21±1	44.8±8.7	39.6±4.5	16.5±2.7	15±1
30 (n=3)	12.6±0.4	9.7±0.7	10.7 ±1.2	9.5±5.5	11.04±6.38	56.7±10.5	34.79±0.95	13.2±1.3	3.2±2.6
39 (n=3)	20.3±3.1	3.3±2.7	11.3±1.5	9.1±5.2	0	24.2±19.7	63.3±17.3	23.6±2.3	0
72 (n=5)	56.0±0.2	0	0	0	0	0	0	0	0