Actinopterygian
Definition
A fish belonging to the class Actinopterygii, structurally characterized by having fins supported by bony or cartilaginous rays (lepidotrichia) arranged radially, without fleshy lobes at the base. This vast group represents the dominant class of extant bony fishes, encompassing over 95% of all known fish species worldwide, adapted to diverse aquatic environments, from mountain freshwaters to abyssal ocean basins.
Bilingual Equivalents
- Actinopterygian
- Ray-finned fish
Grammatical & Source Details
| Inflection Type | Masculine noun or variable adjective, articulated: actinopterigianul, plural: actinopterigieni, genitive-dative: actinopterigienilor. |
| Formation | Scientific compound derived from modern Latin 'Actinopterygii', built from the Greek roots 'aktis' (ray) and 'pteryx' (fin / wing). |
| Spelling / Pronunciation | [ak.ti.nop.te.ri.ˈd͡ʒi.an] |
| Source | Systematic Ichthyology Manual and International Code of Zoological Nomenclature |
Contextual Usage Examples
RO: Păstrăvul este un actinopterigian tipic, având un schelet osos complet dezvoltat și înotătoare flexibile.
EN: The trout is a typical actinopterygian, featuring a fully developed bony skeleton and flexible fins.
RO: Analiza fosilelor sugerează că primul actinopterigian a apărut în mările Silurianului superior.
EN: Fossil analysis suggests that the first actinopterygian appeared in the seas of the Late Silurian.
RO: Cercetătorul a publicat un studiu ihtiologic axat pe taxonomia acestor actinopterigieni marini.
EN: The researcher published an ichthyological study focused on the taxonomy of these marine actinopterygians.
Idioms & Phrases
Clasa actinopterigienilor / Actinopterygian class
RO: Grup structural de vertebrate acvatice caracterizat prin maxilare mobile și înotătoare radiare perechi.
EN: A structural group of aquatic vertebrates characterized by mobile jaws and paired radiating fins.
Înotătoare de actinopterigian / Actinopterygian fin
RO: Membrană cutanată subțire tensionată structural de tije osoase articulate, controlată de mușchi interni puternici.
EN: A thin skin membrane structurally tensioned by articulated bony rods, controlled by powerful internal muscles.
Morfologie actinopterigiană / Actinopterygian morphology
RO: Configurație anatomică definită prin prezența vezicii gazoase folosite pentru reglarea flotabilității și a solzilor ganoizi ori cicloizi.
EN: An anatomical configuration defined by the presence of a swim bladder used for buoyancy regulation and ganoid or cycloid scales.
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