Length-Weight Relationship of 20 Cryptobenthic Fish in Coral and Rocky Reefs in the Gulf of California, Mexico

Table 1

Characteristics of the sample and estimated length-weight relationship (LWR) parameters for the 24 studied species. References are indicated when LWR had been studied in previous studies.

Species	Anterior studies	True cryptic	N	Max size	Size range (cm)	a	95% CI a	b	95% CI b	r^2	Body shape
		(1 = yes, 0 = no)
Acanthemblemaria crockeri (Beebe & Tee-Van, 1938)	A	1	228	6	1.43–3.37	0.014	0.013–0.016	2.738	2.625–2.852	0.93	Elongated
Apogon retrosella (Gill, 1862)	A	0	112	10	1.15–6.16	0.021	0.018–0.024	3.212	3.127–3.298	0.98	Fusiform
Axoclinus nigricaudis (Allen & Robertson, 1991)	—	1	38	4.5	1.21–3	0.018	0.015–0.021	2.894	2.710–3.084	0.98	Elongated
Axoclinus storyae (Brock, 1940)	—	1	23		1.13–2.28	0.019	0.014–0.027	2.959	2.501–3.452	0.93	Elongated
Barbulifer pantherinus (Pellegrin, 1901)	A	1	36	5.2	1.18–2.41	0.016	0.011–0.021	3.298	2.908–3.715	0.91	Elongated
Chriolopis zebra (Ginsburg, 1938)	—	1	72	4.4	0.91–2.78	0.013	0.011–0.016	3.233	3.011–3.467	0.96	Elongated
Cirrhitichthys oxycephalus (Bleeker, 1855)	A	0	17	10	4.42–6.27	0.04	0.016–0.098	2.868	2.347–3.403	0.91	Short & deep
Coralliozetus micropes (Beebe & Tee-Van, 1938)	—	1	11	4	1.61–2.03	0.014	0.004–0.041	2.846	1.078–4.741	0.6	Elongated
Coryphopter usurospilus (Ginsburg, 1938)	A	1	136	6.5	1.36–3.76	0.012	0.011–0.014	3.431	3.312–3.552	0.96	Elongated
Crocodilichthys gracilis (Allen & Robertson, 1991)	A	1	8	6.4	2.4–3.88	0.016	0.010–0.026	2.77	2.394–3.165	0.99	Elongated
Doryrhamphus excisus (Kaup, 1856)	A	1	16	7	1.69–4.59	0.002	0.001–0.002	3.181	2.865–3.524	0.98	Eel-like
Enneactes reticulatus (Allen & Robertson, 1991)	A	1	239	4.9	1.22–4.02	0.032	0.027–0.037	2.459	2.313–2.606	0.83	Elongated
Gobiosoma chiquita (Jenkins & Evermann, 1889)	B	1	27	6.5	1.09–2.34	0.014	0.009–0.021	3.365	2.861–3.940	0.95	Elongated
Lythrypnus pulchellus (Ginsburg, 1938)	A	1	93	4.5	0.7–2	0.019	0.016–0.023	3.044	2.718–3.386	0.85	Fusiform
Lythrypnus rhizophora (Heller & Snodgrass, 1903)	—	1	35	3.4	0.74–2.18	0.019	0.014–0.024	3.333	2.905–3.774	0.91	Fusiform
Malacoctenus hubbsi (Springer, 1959)	—	1	19	9	2.29–4.86	0.018	0.009–0.032	3.092	2.671–3.552	0.97	Fusiform
Paraclinus mexicanus (Gilbert, 1904)	—	1	162	4	0.86–3.34	0.016	0.015–0.018	2.996	2.886–3.108	0.96	Fusiform
Paraclinus sini (Hubbs, 1952)	A	1	22	6	1.74–3	0.011	0.007–0.016	3.53	3.142–3.934	0.96	Fusiform
Pycnomma semisquamatum (Rutter, 1904)	—	1	38	6.3	1.25–3.3	0.016	0.011–0.023	3.204	2.833–3.580	0.91	Elongated
Starksia spinipenis (Al-Uthman, 1960)	A	1	13	5	1.79–2.98	0.015	0.011–0.022	3.357	2.994–3.743	0.98	Fusiform
Stathmonotus sinuscalifornici (Chabanaud, 1942)	—	1	24	6.5	0.88–3.08	0.006	0.003–0.01	3.16	2.57–3.85	0.93	Elongated
Stegastes rectifraenum (Gill, 1862)	A	0	14	13.5	0.98–4.04	0.042	0.030–0.057	2.885	2.646–3.150	0.99	Short & deep
Thalassoma lucasanum (Gill, 1862)	A	0	6	15	1.12–2.91	0.024	0.013–0.037	2.84	2.398–3.413	0.99	Fusiform
Tigrigobius puncticulatus (Ginsburg, 1938)	A	1	60	5	1.07–2.61	0.018	0.015–0.022	3.059	2.803–3.319	0.92	Elongated

A: Balart et al. [15]; B: Moreno-Sánchez et al. [16]; new maximum length record; N = number of specimens; a = is the intersection point with the y axis, b = is the slope of the curve, r² = coefficients of determination, a and b parameters and associated (upper-lower) 95% confidence interval (CI).