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| Half-Naked Hatchetfish | |||
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| General information | |||
| Universe | Real Life | ||
| Aliases | Short Silver Hatchetfish Spurred Hatchetfish | ||
| Classification | Argyropelecus hemigymnus | ||
| Species type | Deep-sea Silver Hatchetfish | ||
| Homeworld | Earth | ||
| Environment | Deep sea | ||
| Intelligence | Non-Sapient | ||
| Biochemistry | Carbon-based lifeform | ||
| Biological information | |||
| Reproduction | Sexual | ||
| Average length | 38 mm (1.5 in) | ||
| Locomotion | Powered swimming | ||
| Feeding behavior | Carnivorous | ||
| Prey | Copepods, ostracods | ||
| Lineage information | |||
| Cultural information | |||
| Alignment | Neutral | ||
| Sociocultral characteristics | |||
| Scientific taxonomy | |||
| Planet | Earth | ||
| Domain | Eukaryota | ||
| Kingdom | Animalia | ||
| Subkingdom | Eumetazoa | ||
| Infrakingdom | Bilateria | ||
| Superphylum | Deuterostomia | ||
| Phylum | Chordata | ||
| Subphylum | Vertebrata | ||
| Infraphylum | Gnathostomata | ||
| Superclass | Osteichthyes | ||
| Class | Actinopterygii | ||
| Subclass | Neopterygii | ||
| Infraclass | Teleostei | ||
| Superorder | Stenopterygii (disputed) | ||
| Order | Stomiiformes | ||
| Family | Sternoptychidae | ||
| Subfamily | Sternoptychinae | ||
| Genus | Argyropelecus | ||
| Species | hemigymnus | ||
| Other information | |||
| Status | Least Concern | ||
The Half-naked hatchetfish, also known as the short silver hatchetfish or the spurred hatchetfish (Argyropelecus hemigymnus), is a deep-sea hatchetfish found mesopelagically in all oceans. It is a small species rarely exceeding 38 millimetres (1.5 in) standard length. It feeds on zooplankton, particularly ostracods and copepods. Sexual maturation occurs at length of about 22 mm, and adult males have more developed olfactory organs than females, i.e. the species is sexually dimorphic.