A new species of the rare deep-sea genus Sciadonus Garman, 1899 (Teleostei, Bythitidae) from off Brazil, with a discussion of the evolution of troglomorphism and miniaturization in the aphyonid clade

A new deep-sea eelpout of the genus Pyrolycus (Teleostei: Zoarcidae) associated with a hydrothermal seep on the Pacific margin of Costa Rica

“…4), this species is relatively diminutive with individuals estimated to generally be smaller than 150 mm TL. This species and genus as a whole may exhibit characteristics consistent with the process of miniaturization that causes size reduction along with paedomorphic traits such as a reduction of latero-sensory canals, fin rays and scales, and a reduction or simplification of the skeleton (Weitzman and Vari 1988;Britz et al 2009;de Melo et al 2022). Pyrolycus jaco sp.…”

New records of rare deep‐sea fishes (Teleostei) collected from off north‐eastern Brazil, including seamounts and islands of the Fernando de Noronha Ridge

“…Expansion of offshore economic activities worldwide is actually a trend in the following decades, and as a consequence proposals for mitigating anthropogenic impacts on deep‐sea habitats will be required at an increasing pace, especially in the emerging context of the Blue Economy (Almada & Bernardino, 2017; Novaglio et al ., 2021). Therefore, recent efforts towards increasing the knowledge of the deep‐sea fish diversity of the western South Atlantic and off Brazil in particular should be celebrated ( e.g ., Bauer et al ., 2021; Klautau et al ., 2020; Melo et al ., 2020, 2022; Schwarzhans et al ., 2020; our studies). However, offshore oil companies and funding agencies in general should further increase the investment necessary for the proper understanding and management of this complex and still insufficiently known environment.…”