ScombridaeScombridae is a family of marineray-finned fish that consists of 51 extantspecies in 15 genera and two subfamilies, many of which are the most important and familiar commercial food fishes. All but one species are in the subfamily Scombrinae, which include mackerel, tuna and bonito; while the only exception is the butterfly kingfish, which is the sole member of subfamily Gasterochismatinae.
TunaTuna (pl.: tunas or tuna) are saltwater fish belonging to the tribe Thunnini, a subgrouping of the Scombridae (mackerel) family. The Thunnini comprise 15 species across five genera, the sizes of which vary from the bullet tuna (max length: 50 cm or 1.6 ft, weight: 1.8 kg or 4 lb) to the Atlantic bluefin tuna (max length: 4.6 m or 15 ft, weight: 684 kg or 1,508 lb), which averages 2 m (6.6 ft) and is believed to live up to 50 years.
Auxis eudoraxAuxis eudorax is a species of tuna in the family Scombridae. It is a pelagic marine species native to the Eastern Pacific, where it has been reported from mainland Ecuador, the Galápagos, Mexico, Panama, and the United States. The species reaches 36.5 cm (14.4 inches) in fork length.
Dorsal finA dorsal fin is a fin on the back of most marine and freshwater vertebrates. Dorsal fins have evolved independently several times through convergent evolution adapting to marine environments, so the fins are not all homologous. They are found in most fish, in mammals such as whales, and in extinct ancient marine reptiles such as ichthyosaurs. Most have only one dorsal fin, but some have two or three.
Family (taxonomy)Family (Latin: familia, pl.: familiae) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus.
SpeciesBasic unit of taxonomic classification, below genusThe hierarchy of biological classification's eight major taxonomic ranks. A genus contains one or more species. Minor intermediate ranks are not shown.A species (pl. species) is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity.SubspeciesA subspecies is a taxonomic rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species have subspecies, but for those that do there must be at least two. Subspecies is abbreviated as subsp. or ssp. and the singular and plural forms are the same ("the subspecies is" or "the subspecies are").
Scale (zoology)In zoology, a scale (Ancient Greek: , romanized: lepís; Latin: ) is a small rigid plate made out of keratin that grows out of vertebrateanimals' skin to provide protection. In lepidopterans (butterflies and moths), scales are plates on the surface of the insect wing, made out of chitin instead of keratin, and provide coloration. Scales are quite common and have evolved multiple times through convergent evolution, with varying structure and function.
Fish anatomyFish anatomy is the study of the form or morphology of fish. It can be contrasted with fish physiology, which is the study of how the component parts of fish function together in the living fish.
Photic zoneThe photic zone (or euphotic zone, epipelagic zone, or sunlight zone) is the uppermost layer of a body of water that receives sunlight, allowing phytoplankton to perform photosynthesis. It undergoes a series of physical, chemical, and biological processes that supply nutrients into the upper water column. The photic zone is home to the majority of aquatic life due to the activity (primary production) of the phytoplankton.
Fish finBony skin-covered spines or rays protruding from the body of a fishRay fins on a teleost fish, Hector's lanternfish (1) pectoral fins (paired), (2) pelvic fins (paired), (3) dorsal fin,(4) adipose fin, (5) anal fin, (6) caudal (tail) finFins are moving appendages protruding from the body of fish that interact with water to generate thrust and lift, which help the fish swim.*As an Amazon Associate I earn from qualifying purchases.