The small-eyed rabbitfish (Hydrolagus affinis) is a species of fish in the family Chimaeridae. It has very wide distribution almost everywhere in Northern Atlantic at depths from 300 to 2,410 m, being most common below 1,000 m. Its total length ranges from 32 to 147 cm. It has a short nose with a blunt tip.

The Small-eyed Rabbitfish (Hydrolagus affinis) is a large-sized deep-water chimaera (to at least 147 cm total length) known from a widespread distribution in the North and Eastern Atlantic Ocean. It has been recorded from the continental slope, seamounts, ridges, and abyssal plains at depths of 300–2,453 m, and is most common >1,000 m.