Fish species
Définition
Species
Fossorial
Définition
Sens commun
Describes a marine organism that lives and moves in the sediment, either for protection or for finding food.Source
According to Ifremer
Fauna
Définition
Sens commun
All animal species that make a population or zoocoenosis. Also designates all animals specific to a region or to a given geological era.
Source
According to Ifremer
Target species
Définition
Sens commun
Species on which the fisherman, a priori, decided to focus his fishing activity and for which he has prepared suitable equipment.Source
According to Ifremer
Species
Définition
Sens commun
All individuals which share similar morphological and physiological hereditary characteristics and are able to breed individuals among themselves. Species that look alike but unable to breed among themselves belong to the same genus.Source
According to Ifremer
Scales
Définition
Sens commun
Horny or bony plates arranged in overlapping rows on the body of the fish, the free rear end of a scale covering the front end attached to the scale behind it. In a number of species, the scales are thickened and form true bony plates. For others, however, they are minor (eels). Fish of a given species keep the same number of scales all their life. Aging does not cause an increase in the number of scales, but the growth of the scales themselves. The scales cover the entire body of the fish (except fins). They are fully covered by a very thin and fragile skin.Source
According to Ifremer
Classified watercourse (for the crossing of migratory fish)
Définition
Sens technique
Watercourses or part of rivers and canals entered into a list set by decree, after collaboration with the Departemental Councils made within six months after their seizin. Any new structure built on these watercourses must have a device ensuring adequate sediment transport and movement of
Source
According to the Ministry of Ecology
shellfish
Définition
Sens commun
Usually refers to a mollusc, generally from the sea, bearing a shell (shell-forming). At the regulatory level (health regulations), the term "shellfish" refers to the following marine animals: bivalve molluscs (filter feeder), gastropod molluscs, sea urchins (echinoderms) and sea squirts (tunicates).Source
According to Ifremer
Species classification
Définition
Sens commun
Science aiming to create and advance the classification of living beings. The classification of species is a logical system that establishes a particular kinship with other species that are close or far away owing to the various species characteristics of their own. The system in force since Linnaeus (1758) is a system of binomial nomenclature (generic name + specific name), written in Latin.Source
According to Ifremer
Spawning biomass
Définition
Sens technique
Weight of sexually mature animals actually participating in breeding. It is expressed as the total weight of females and sometimes by the weight of sexual matter (gonad, sex products, etc).Source
According to Ifremer