Early ontogeny of Pimelodus blochii Valenciennes, 1840 (Siluriformes: Pimelodidae): Neotropical catfish Author Silva, Fabíola Katrine Souza Da Laboratório de Ecologia do Ictioplâncton e Pesca em Águas Interiores / UFOPA (Universidade Federal do Oeste do Pará). Rua Vera Paz, Salé, bloco 11, sala 04, CEP 68040 - 470, Santarém, Pará, Brasil. Author Cajado, Ruineris Almada 0000-0002-7047-0302 Laboratório de Ecologia do Ictioplâncton e Pesca em Águas Interiores / UFOPA (Universidade Federal do Oeste do Pará). Rua Vera Paz, Salé, bloco 11, sala 04, CEP 68040 - 470, Santarém, Pará, Brasil. & ruineris. cajado @ gmail. com; https: // orcid. org / 0000 - 0002 - 7047 - 0302 ruineris.cajado@gmail.com Author Oliveira, Lucas Silva De 0000-0002-1631-0498 Laboratório de Ecologia do Ictioplâncton e Pesca em Águas Interiores / UFOPA (Universidade Federal do Oeste do Pará). Rua Vera Paz, Salé, bloco 11, sala 04, CEP 68040 - 470, Santarém, Pará, Brasil. & lucasmdcpa @ gmail. com; https: // orcid. org / 0000 - 0002 - 1631 - 0498 lucasmdcpa@gmail.com Author Ribeiro, Frank Raynner Vasconcelos Coleção Ictiológica da Universidade Federal do Oeste do Pará. Author Zacardi, Diego Maia 0000-0002-2652-9477 Laboratório de Ecologia do Ictioplâncton e Pesca em Águas Interiores / UFOPA (Universidade Federal do Oeste do Pará). Rua Vera Paz, Salé, bloco 11, sala 04, CEP 68040 - 470, Santarém, Pará, Brasil. & dmzacardi @ hotmail. com; https: // orcid. org / 0000 - 0002 - 2652 - 9477 dmzacardi@hotmail.com text Zootaxa 2021 2021-03-18 4948 1 83 98 journal article 10.11646/zootaxa.4948.1.4 1175-5326 4616153 9F6B62B8-0873-410F-A8A7-F2C4176CB3D1

TABLE 1. Analyzed variables (MM), minimum values (Min), maximum values (Max), average (Avg), standard deviation (SD) and morphometric relationships (%) found for morphometric and meristic variables obtained from Pimelodus blochii larvae and juveniles. HH—head height; BH—body height; HL—head length; SNL—snout length; SL—standard length; ED—eye diameter; SNA—snout-anal fin distance; SND—snout-dorsal fin distance; SNP—snout-pectoral fin distance; SNV—snout-pelvic fin distance; N—number of analyzed individuals; n—number of individuals with the mode of myomeres; AF—absent fin, NV—not visible. *counting numbers of the two diaphanized juvenile individuals.

Stages in development
Variables	Preflexion (N=15)		Flexion (N=32)		Postflexion (N=42)		Juvenile (N=30)
(MM)	Min–Max	Avg ± SD	Min–Max	Avg ± SD	Min–Max	Avg ± SD	Min–Max	Avg ± SD
SL	4.00–5.00	4.60 ± 0.45	7.00–9.00	8.21 ± 0.67	9.30–12.40	10.75 ± 0.75	11.40–15.70	13.35 ± 0.97
HL	0.90–1.10	0.97 ± 0.10	2.00–2.81	2.37 ± 0.21	2.82–4.25	3.50 ± 0.32	3.68–5.13	4.51 ± 0.39
SNL	0.20–0.40	0.33 ± 0.10	0.60–0.60	–	0.60–0.80	0.80 ± 0.03	0.80–1.20	1.00 ± 0.05
ED	0.10–0.10	–	0.20–0.40	0.38 ± 0.06	0.60–0.80	0.68 ± 0.08	0.90–1.00	1.00 ± 0.02
HH	0.80–0.80	–	1.40–1.90	1.63 ± 0.18	2.00–2.80	2.25 ± 0.20	2.20–3.80	2.77 ± 0.42
BH	0.80–1.00	0.93 ± 0.10	1.60–2.40	2.03 ± 0.22	2.20–3.20	2.74 ± 0.26	2.60–4.40	0.47 ± 3.36
SND	AF	AF	2.00–2.80	2.44 ± 0.27	3.20–4.40	3.86 ± 0.27	4.00–6.80	4.45 ± 0.74
SNA	AF	AF	3.80–5.00	4.30 ± 0.34	5.00–6.90	5.96 ± 0.48	6.40–8.70	7.10 ± 0.68
SNP	AF	AF	1.60–2.00	1.84 ± 0.12	2.80–3.60	3.14 ± 0.21	3.00–5.00	3.83 ± 0.52
SNV	AF	AF	AF	AF	4.00–6.20	5.03 ± 0.43	5.60–7.60	6.20 ± 0.59
Morphometric relationships (%)
SNL/HL	18.18–50.00	36.73 ± 12.87	21.39–29.97	25.46 ± 2.24	15.22–28.41	22.90 ± 2.42	17.55–27.21	22.31 ± 2.21
ED/HL	9.10–12.50	10.90 ± 1.44	7.61.–19.98	15.92 ± 3.00	14.12–25.61	19.47 ± 2.96	19.51–27.21	22.24 ± 1.95
HH/HL	72.72–100.00	87.20 ± 11.59	53.31–89.91	68.97 ± 9.83	50.76–85.25	64.88 ± 8.79	44.11–82.83	61.56 ± 8.92
HL/SL	16.00–27.50	20.58 ± 4.09	22.24–35.75	29.07 ± 3.32	24.26–40.20	32.69 ± 3.42	29.01–40.18	33.89 ± 3.15
BH/SL	16.66–25.00	20.33 ± 1.63	17.77–28.75	24.73 ± 2.47	21.42–29.62	25.52 ± 2.02	19.10–30.98	25.16 ± 2.87
SNA/SL	AF	AF	46.66–58.57	52.46 ± 3.09	49.02–62.00	55.47 ± 3.20	48.88–63.15	54.90 ± 4.03
SND/SL	AF	AF	22.22–35.00	29.75 ± 3.09	29.31–42.00	35.97 ± 2.57	28.57–47.88	35.26 ± 4.42
SNP/SL	AF	AF	17.77–27.14	22.55 ± 1.84	25.83–33.33	29.27 ± 1.74	23.35–35.21	28.66 ± 3.04
SNV/SL	AF	AF	AF	AF	37.50–54.00	46.81 ± 3.34	38.89–57.89	47.59 ± 4.63