Channa nachi, a new species of snakehead (Teleostei: Channidae) from Meghalaya, Northeast India Author Praveenraj, Jayasimhan Indian Council of Agricultural Research-Central Island Agricultural Research Institute, Sri Vijaya Puram, Andaman and Nicobar Islands, India, 744 101. Author Moulitharan, Nallathambi 0000-0002-0321-5205 moulitharan769677@gmail.com Author Pavan-Kumar, Annam ICAR-Central Institute of Fisheries Education, Fisheries Resources, Harvest & Post-Harvest Management Division, Mumbai, India, 400 06. Author Naveen, Ravi Shanthy Madras Crocodile Bank Trust and Centre for Herpetology, Mamallapuram, Tamil Nadu, India, 603 104. Author Thackeray, Tejas Thackeray Wildlife Foundation, Bandra, Mumbai, India, 400 051. Author Yumnam, Rameshori Department of Zoology, Manipur University, Canchipur, Imphal West, Manipur, India, 795 003. Author Gurumayum, Shantabala Devi Zoological Survey of India, Arunachal Pradesh regional centre, Itanagar, India, 791 113. text Zootaxa 2025 2025-03-27 5613 2 337 350 https://doi.org/10.11646/zootaxa.5613.2.8 journal article 309310 10.11646/zootaxa.5613.2.8 d1d98348-2bcc-4dc2-a403-66c4ebfbae80 1175-5326 15216587 70BC9441-61CE-4E05-8034-62E99FE515D8

TABLE 1. Morphometric data of Channa nachi type series (N =17)

Morphometric characters	Holotype	Range (includes holotype and paratypes) (N=17)	Mean±SD
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Standard length (mm)	96.4	63.3–122.0
in percent of standard length
Head length	31.8	27.7–32.3	29.9±1.2
Head depth	13.4	10.6–14.2	11.9±1.1
Head width	20.5	16.2–20.5	16.9±4.1
Body depth	13.7	10.7–13.9	12.5±1.1
Body width	13.4	9.0–13.4	10.9±1.1
Pre-dorsal length	38.4	34.4–38.4	36.0±1.1
Pre-anal length	53.8	50.4–56.0	53.4±1.3
Pre-pectoral length	32.9	30.2–32.9	31.7±0.9
Dorsal-fin base length	60.7	54.4–61.6	57.7±1.9
Anal-fin base length	36.6	32.5–38.4	36.1±1.6
Pectoral fin length	19.7	16.9–22.8	19.8±1.6
Caudal-peduncle length	9.9	9.9–13.7	12.2±1.1
Caudal-peduncle depth	11.3	8.6–11.3	10.2±0.6
Snout length	7.8	6.0–8.3	7.1±0.6
Eye-diameter	5.5	4.0–5.5	4.8±0.5
Pre-orbital depth	8.5	7.0–9.4	7.8±0.7
Post-orbital depth	11.7	9.8–11.7	10.6±0.6