| Family | Scientific Name | Author | Year | Common Name |
| Paralepididae | Arctozenus risso | (Bonaparte 1840) | 1840 | White Barracudina |
Arctozenus risso
Unique Characteristics: Pectoral fins short, longest fin ray shorter than anal-fin base. Large mandibular teeth fixed or flexible and with smooth edges.Pelvic-fin origins behind a vertical from midpoint of dorsal-fin base.Ventral adipose fin between vent and anal fin absent. Body scaled, but scales very delicate and easily shed; gill rakers needle-like on bony bases. Anal-fin rays 28-33; gill rakers forming numerous rows of short needle-like filaments (FAO 2020).
Reference:
(FAO 2020) Sutton, T.T., P.A. Hulley, R. Wienerroither, D. Zaera-Perez, and J.R. Paxton. 2020. Identification guide to the mesopelagic fishes of the central and south east Atlantic Ocean. FAO Species Identification Guide for Fishery Purposes. Rome, FAO. 2020. https://doi.org/10.4060/cb0365en.
Unique Characters: Body elongate, its depth 10 or more times in SL. Snout pointed, about half head length. Gill rakers needle-like in multiple series on bony bases. Dorsal fin short, well behind midpoint of body, with 9-10 fin rays. A small adipose dorsal fin near tail. Pectoral fin rays 11-13; pelvic fins behind dorsal fin base, with 9 fin rays; anal fin far back on body, with 30-32 fin rays. Anus between pelvic fins. Body scaled, but scales delicate and easily shed; 62-67 scales in lateral line. Large melanophores scattered to make dark dorsal band. Size: to 29 cm.
Reference:
Marine Species Identification Portal. Accessed at: http://species-identification.org/index.php.
Unique Characters: Body covered by cycloid scales, moderately stout to slender. Body uniformly and densely covered with chromatophores. Body depth 9‒16 times in standard length. A short, deep head, depth at middle of eye 3.5‒4.1 in head length. Gill rakers with multiple rows of short teeth, which never slender or needle-like. Scales on body smaller than lateral-line scales. Anterior lateral-line scales subequal in depth and length. Teeth on anterior portion of palatine enlarged and fang-shape; two rows of tooth pairs on lower jaw. Pelvic fin origin under dorsal-fin base.
Reference:
Ho, H. and G. Duhamel. 2019. A new species of the fish genus Arctozenus from the Kerguelen Islands, with comments on the lost teeth in adults (Aulopiformes: Paralepididae). Zootaxa 4651 (3):497–512.
Similar Species: None.