Trachinocephalus trachinus

Trachinocephalus trachinus
An individual caught in Japan
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Aulopiformes
Family: Synodontidae
Genus: Trachinocephalus
Species:
T. trachinus
Binomial name
Trachinocephalus trachinus
(Temminck & Schlegel, 1846)
Synonyms

Saurus trachinus Temmick and Schlegel, 1846

Trachinocephalus trachinus, also known as the Indo-Pacific blunt-nose lizardfish is a species of fish in the family Synodontidae found in Indo-Pacific. Although previously synonymized with T. myops, Polanco et al. (2016) demonstrated that the two are distinct in the number of lateral-line scales and other meristics, and resurrected T. trachinus for the Indo-Pacific population.[1] This species grows to a length of 40 centimetres (16 in) TL.[2]

Description

Trachinocephalus trachinus is a slender, bottom-dwelling lizardfish with a pointed head and a mouth lined with sharp, conical teeth.[3] The body is elongated and cylindrical, with small cycloid scales that give it a smooth texture.[4] Its coloration typically includes a light tan or brown body with darker blotches and faint horizontal stripes that help it blend into sandy or rubble-covered habitats. [3] Like other lizardfishes, it has a large mouth and forward-facing eyes that support its ambush-predator lifestyle.[4] The dorsal fin is located near the middle of the body, and the species has a small adipose fin near the tail, which is a characteristic feature of the group.[5]

Distribution and habitat

Although originally thought to be widespread, Trachinocephalus trachinus is now recognized as primarily an Indo-Pacific species.[6] The species typically lives on soft substrates where it can bury itself while waiting for prey.[4] Its preferred habitat includes warm to temperate waters where small fishes and invertebrates are abundant.[3]

Ecology and feeding behavior

Trachinocephalus trachinus is an ambush predator, feeding mostly on small fishes and occasionally crustaceans it captures by lunging from the substrate.[3] Its body shape and coloration allow it to remain partially buried in sand, giving it an advantage when hunting unsuspecting prey.[4] The species is known for its rapid striking behavior, which is common among lizardfishes and supported by strong jaw muscles and sharp teeth.[4]

References

  1. ^ Polanco F., A., Acero P., A. & Betancur-R., R. (2016): No longer a circumtropical species: revision of the lizardfishes in the Trachinocephalus myops species complex, with description of a new species from the Marquesas Islands. Journal of Fish Biology, 89 (2): 1302-1323.
  2. ^ Froese, Rainer; Pauly, Daniel (eds.). "Trachinocephalus myops". FishBase. June 2016 version.
  3. ^ a b c d "Bluestripe Lizardfish, Trachinocephalus trachinus". www.marinelifephotography.com. Retrieved 2025-12-03.
  4. ^ a b c d e "Painted Grinner, Trachinocephalus trachinus (Temminck & Schlegel, 1846)". The Australian Museum. Retrieved 2025-12-03.
  5. ^ Australia, Atlas of Living. "Species: Trachinocephalus trachinus (Painted Grinner)". bie.ala.org.au. Retrieved 2025-12-03.
  6. ^ "WoRMS - World Register of Marine Species - Trachinocephalus trachinus (Temminck & Schlegel, 1846)". www.marinespecies.org. Retrieved 2025-12-03.