The grey knifefish (Bathystethus cultratus) is a species of sea chub native to the Pacific Ocean from Australia to New Zealand and the Kermadec Islands. This species is a plankton eater which swims constantly within a few meters of the surface of the ocean. This species can reach a length of 30 cm (12 in).[1]
| Grey knifefish | |
|---|---|
.gif) | |
| Drawing by Dr Tony Ayling | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Perciformes |
| Family: | Kyphosidae |
| Genus: | Bathystethus |
| Species: | B. cultratus |
| Binomial name | |
| Bathystethus cultratus (Bloch & J. G. Schneider, 1801) | |
| Synonyms | |
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