Definition

Noun 1. A genus of marine fish: Katsuwonus is the genus name for a specific type of large, fast-swimming, oceanic fish. This genus is part of the mackerel and tuna family (Scombridae). The most well-known species within this genus is the skipjack tuna.

Usage Notes

• The word is a scientific, taxonomic term used primarily in biology, ichthyology (the study of fish), and commercial fishing contexts. It is not used in everyday conversation.
• It is always capitalized, as it is a proper noun (a genus name).
• In non-scientific contexts, people refer to the fish by its common name, "skipjack tuna" or "skipjack."

Examples

• Scientific Context:
  • The genus Katsuwonus is characterized by its streamlined body and lack of body scales except on the corselet.
  • Biologists classified the specimen under Katsuwonus.
• Fishing/Commercial Context:
  • The catch was predominantly Katsuwonus pelamis. (Here, pelamis is the species name).
  • Canned light tuna often contains fish from the genus Katsuwonus.

Advanced Usage

• Taxonomic Hierarchy: The term is used to specify an organism's classification.
  • Example: The skipjack tuna's full scientific classification is: Kingdom Animalia, Phylum Chordata, Class Actinopterygii, Order Scombriformes, Family Scombridae, Genus Katsuwonus, Species K. pelamis.

Variants and Related Words

• Katsuwonus pelamis (n): The full binomial (two-part) scientific name for the skipjack tuna. This is the only extant (currently living) species in the genus.
• Skipjack (tuna) (n): The common name for .
• Oceanic bonito (n): Another common name used for this fish.
• Scombridae (n): The biological family that includes , mackerels, tunas, and bonitos.

Synonyms

• Skipjack tuna
• Skipjack
• Oceanic bonito
• (Hawaiian name)
• (Japanese name)

Notes on Meaning

• The reference context mentions "in some classifications placed in its own family Katsuwonidae." This highlights that scientific classification can change. While currently considered part of the family Scombridae, some older or alternative taxonomic systems may classify it separately. The core meaning of the word as a genus of fish remains unchanged.

Noun

1. oceanic bonitos; in some classifications placed in its own family Katsuwonidae