Stolephorus falco sp. nov. (Teleostei, Clupeiformes, Engraulidae), a new anchovy from Sumatra, Indonesia Author Hata, Harutaka 0000-0002-6996-3628 Macroevolution Unit, Okinawa Institute of Science and Technology, 1919 - 1 Tancha, Onna-son, Kunigami-gun, Okinawa 904 - 0495, Japan Author Sallan, Lauren 0000-0002-4441-1456 Macroevolution Unit, Okinawa Institute of Science and Technology, 1919 - 1 Tancha, Onna-son, Kunigami-gun, Okinawa 904 - 0495, Japan Author Motomura, Hiroyuki 0000-0002-7448-2482 The Kagoshima University Museum, 1 - 21 - 30 Korimoto, Kagoshima 890 - 0065, Japan text ZooKeys 2026 2026-02-25 1270 255 268 journal article 314307 10.3897/zookeys.1270.175032 cdb06ce8-ef8d-4bd7-ba43-1b60b6111ff5 8322C12D-6E1A-4F0C-A6DF-62D4D2108FB5

Table 3. Frequency distribution of total gill rakers on 1 st, 2 nd, 3 rd, 4 th gill arch and posterior surface of 3 rd epibranchial in Stolephorus falco sp. nov., S. tri, S. baganensis, S. taurus, and S. dubiosus, based on specimens examined in this study.

Total gill rakers on 1 st gill arch
		32	33	34	35	36	37	38	39	40	41	42	43	44	45	46	47	48	49	50	51	52	53
S. falco sp. nov.	n = 3								1	1	1
S. tri	n = 41	3	4	8	7	9	4	4	2
S. baganensis	n = 81				1	2	6	8	20	18	10	10	5
S. taurus	n = 25														4	5	6	5	5
S. dubiosus	n = 28														1	2	3	4	7	5	4		2
Total gill rakers on 2 nd gill arch
		27	28	29	30	31	32	33	34	35	36	37	38	39	40	41	42	43	44	45	46	47	48
S. falco sp. nov.	n = 3							1		1	1
S. tri	n = 41	7	8	14	5	3	4
S. baganensis	n = 81					5	7	16	13	21	12	4	3
S. taurus	n = 26													7	11	5	3
S. dubiosus	n = 28													3	1	3	5	8	2	3	2		1
Total gill rakers on 3 rd gill arch
		18	19	20	21	22	23	24	25	26	27	28	29	30	31
S. falco sp. nov.	n = 3					2	1
S. tri	n = 41	5	7	10	5	4
S. baganensis	n = 81			2	9	31	17	21	2
S. taurus	n = 26							1	4	13	7	1
S. dubiosus	n = 28									1	6	12	4	5	1
Total gill rakers on 4 th gill arch
		15	16	17	18	19	20	21	22	23	24	25
S. falco sp. nov.	n = 3			2	1
S. tri	n = 41	2	20	13	5	1
S. baganensis	n = 82		5	16	39	17	4	1
S. taurus	n = 26					2	16	7	1
S. dubiosus	n = 29						2	8	11	3	4	1
Gill rakers on posterior surface of 3 rd epibranchial
		3	4	5	6	7
S. falco sp. nov.	n = 3		3
S. tri	n = 41		7	32	2
S. baganensis	n = 82	2	30	41	9
S. taurus	n = 26		4	14	7	1
S. dubiosus	n = 29			13	13	3