taxonID	type	description	language	source
BF12FA4361D7578E84779615E7B24471.taxon	description	English common name: bluntnose sixgill shark Spanish common name: tiburón leche (Figs 2, 3; Table 1)	en	Del Moral-Flores, Luis Fernando, Lozano-Quiroz, Sergio Alejandro, Escartín-Alpizar, Viridiana R., García-Mercado, Eduardo, Hernández-Ortiz, Rolando (2025): First record of the bluntnose sixgill shark, Hexanchus griseus (Elasmobranchii, Hexanchiformes, Hexanchidae), from the southwestern Gulf of Mexico. Acta Ichthyologica et Piscatoria 55: 115-121, DOI: 10.3897/aiep.55.147223
BF12FA4361D7578E84779615E7B24471.taxon	description	Description. Table 1. Robust body, large and broad head, head length (HL) 14.7 % of TL. Snout wide (27 % HL), big mouth and ventral arched with symphyseal tooth on both jaws and six rows of large, serrated comb-shaped teeth on each side of lower jaw. Ten teeth on each side of upper jaw with hooked cusp, not counting smallest and molariform ones. Six large gill slits not inserted on pectoral fins. Eye small (13.3 % HL), pupil dark with white rim, prominent tapetum lucidum giving a fluorescent greenish coloration in life. Single dorsal fin originating ahead of anal fin insertion. Short caudal peduncle (8.3 % TL). Asymmetric caudal fin. For all measurements see Table 1. Specimen sexually mature, testes elongated, vascularized, with well-developed vas deferens and, along with seminal vesicles, filled with sperm. Clasper calcified, mobile, and presented several hematomas.	en	Del Moral-Flores, Luis Fernando, Lozano-Quiroz, Sergio Alejandro, Escartín-Alpizar, Viridiana R., García-Mercado, Eduardo, Hernández-Ortiz, Rolando (2025): First record of the bluntnose sixgill shark, Hexanchus griseus (Elasmobranchii, Hexanchiformes, Hexanchidae), from the southwestern Gulf of Mexico. Acta Ichthyologica et Piscatoria 55: 115-121, DOI: 10.3897/aiep.55.147223
