Table 3. Mean and standard deviations (SD) of morphometric measurements in percentage

	Congo		Nigeria		Wouri		Sanaga
	Mean ± SD	Range	Mean ± SD	Range	Mean ± SD	Range	Mean ± SD	Range
SL	111.89 ± 42.52	55.24–246.34	120.61 ± 30.49	57.5–170.64	125.07 ± 29.38	86.23–186.72	154.44 ± 43.08	90.84–203.66
BD %SL	21.38 ± 2.26	17.72–26.16	23.92 ± 2.26	17.29–27.52	20.94 ± 2.05	16.91–25.03	21.49 ± 2.00	18.89 ± 25.92
HL %SL	25.98 ± 1.53	23.30–29.18	26.20 ± 1.00	23.55–27.75	24.83 ± 1.29	22.75–28.43	24.01 ± 0.55	23.44 ± 25.19
HD%HL	73.27 ± 6.51	61.35–87.54	80.67 ± 7.39	68.28–93.38	79.41 ± 7.19	68.52–96.15	84.87 ± 6.16	76.61–96.79
HW%HL	32.85 ± 3.99	27.79–45.79	33.94 ± 3.72	26.15–39.97	33.69 ± 2.91	26.81–39.03	34.77 ± 4.91	27.27–42.44
SnL %HL	34.12 ± 2.56	28.46–43.39	33.93 ± 2.06	29.15–38.99	35.47 ± 2.52	31.58–39.84	34.59 ± 2.66	29.90–38.83
ED %HL	16.19 ± 2.37	12.06–26.19	14.18 ± 1.57	11.86–19.19	15.99 ± 1.34	13.83–18.94	13.97 ± 1.58	12.13–16.87
IoW %HL	26.54 ± 2.51	21.34–31.27	24.95 ± 1.96	19.15–28.44	26.97 ± 1.96	23.21–30.83	25.28 ± 1.77	22.07–28.28
PoL %HL	51.61 ± 2.59	45.89–58.73	51.36 ± 2.49	47.81–61.35	51.71 ± 4.29	45.72–60.88	48.96 ± 3.24	43.98–55.25
DNN %HL	3.31 ± 1.06	1.44–5.11	2.72 ± 0.70	1.68–4.35	3.09 ± 0.95	1.79–5.07	3.03 ± 0.56	2.03–3.79
DNE %HL	7.94 ± 1.49	5.37–11.39	8.82 ± 1.58	5.41–11.89	8.23 ± 1.92	4.28–11.87	9.60 ± 1.55	7.41–11.85
MW %HL	8.62 ± 1.43	6.25–10.97	8.04 ± 1.15	5.95–11.23	9.66 ± 0.94	8.09–12.44	8.54 ± 1.10	7.06–8.54
CiL %HL	38.49 ± 5.92	28.03–52.05	38.74 ± 2.44	32.92–43.97	37.77 ± 4.67	31.83–50.63	39.01 ± 4.51	30.36–45.69
PDD %SL	64.73 ± 1.19	62.51–66.78	64.49 ± 1.38	62.28–67.10	63.55 ± 0.92	62.21–65.74	63.21 ± 0.67	61.99–64.11
PAD %SL	59.81 ± 2.08	55.76–63.49	59.19 ± 1.19	56.24–61.78	58.54 ± 1.91	55.87–63.72	58.26 ± 1.03	56.36-59.40
PPlD %SL	37.36 ± 1.34	35.04–39.75	37.52 ± 1.09	35.39–39.52	36.28 ± 1.29	34.77 ± 39.64	35.78 ± 0.66	34.92–37.101
PPcD %SL	23.71 ± 1.11	21.92–25.71	23.92 ± 0.90	21.86–25.49	23.12 ± 0.77	21.98–25.37	22.24 ± 0.42	21.79–23.04
DFL %SL	20.34 ± 1.98	17.56–24.23	21.60 ± 0.99	18.67–23.69	21.95 ± 1.10	19.66–24.00	22.28 ± 0.98	21.14–24.10
DFH %SL	14.09 ± 1.01	12.2–16.26	14.27 ± 0.92	12.33–16.13	14.61 ± 1.02	12.20–16.13	14.33 ± 0.85	12.59–15.29
AFL %SL	27.25 ± 1.76	24.55–30.33	27.14 ± 1.21	24.24–29.86	27.29 ± 1.14	24.83–29.36	27.86 ± 1.05	26.07–29.53
AFH %SL	14.26 ± 0.65	13.09–15.30	14.01 ± 0.68	13.05–15.36	14.22 ± 0.69	13.10–15.14	14.08 ± 0.69	13.06–15.21
PlFL %SL	9.44 ± 0.35	8.72–10.16	9.47 ± 0.38	8.50–10.14	9.38 ± 0.36	8.72–10.12	9.56 ± 0.24	9.17–9.91
PcFL %SL	19.26 ± 0.79	17.67–20.81	19.45 ± 0.78	17.73–21.20	18.91 ± 0.96	17.33–21.33	18.84 ± 0.66	18.17–20.01
D-PlF-AF %SL	22.04 ± 1.19	19.81–24.77	21.73 ± 1.16	19.23–23.91	22.54 ± 1.27	19.74–24.33	22.91 ± 1.27	20.39–24.69
D-PCF-AF %SL	35.86 ± 1.78	33.01–39.27	35.21 ± 2.71	20.51–38.09	35.83 ± 1.46	33.11–38.51	36.46 ± 1.65	33.33–38.29
D-PCF-PlF %SL	14.63 ± 1.42	11.32–17.12	14.43 ± 1.15	11.74–16.22	14.02 ± 0.89	12.31–15.82	14.14 ± 1.55	11.82–16.24
D-DF-AF %SL	25.10 ± 1.11	23.14–27.96	26.17 ± 1.54	21.82–28.70	25.77 ± 1.17	22.77–27.81	26.59 ± 0.84	24.89–27.64
CPL %SL	16.95 ± 1.23	14.18–19.87	17.00 ± 0.79	15.29–19.03	16.67 ± 1.02	14.89–18.42	16.73 ± 1.03	15.16–18.36
CPH %SL	5.83 ± 0.55	4.92–7.17	5.72 ± 0.46	4.79–6.73	5.59 ± 0.22	5.07–5.97	5.36 ± 0.37	4.75–5.80
CPD %SL	5.14 ± 0.58	3.85–6.44	5.15 ± 0.36	4.31–5.89	4.99 ± 0.33	4.02–5.38	5.18 ± 0.54	4.49–6.26

SL, standard length; BD, body depth; HL, head length; HD, head depth; HW, head width; SnL, snout length; ED, eye diameter; IoW, inter orbital width; PoL, post orbital length; DNN, distance between nostrils; DNE, distance between nostril and eye; MW, mouth width; CIL, chin lobe length; PDD, predorsal distance; PAD, preanl distance; PPlD, prepelvic distance; PPcD, prepectoral distance; DFL, dorsal fin length; DFH, dorsal fin height; AFL, anal fin length; AFH, anal fin height; PlFL, pelvic fin length; PcFL, pectoral fin length; D-PlF-AF, distance between pelvic and anal fin; D-PcF-AF, distance between pectoral and anal fin; D-PcF-PlF, distance between pectoral and pelvic fin; D-DF-AF, distance between dorsal and anal fin; CPL, caudal peduncle length; CPH, caudal peduncle height; CPD, caudal peduncle depth.