Acanthopterygian
Definition
A term designating teleost fishes of the superorder Acanthopterygii, characterized by rigid, unjointed spiny rays in the anterior portions of the dorsal and anal fins, as well as a closed swim bladder (physoclistous). They constitute the most ecologically diverse and evolutionarily advanced group of modern fishes, occupying a vast array of marine and freshwater niches.
Bilingual Equivalents
- Acanthopterygian
- Spiny-finned fish
Grammatical & Source Details
| Inflection Type | Masculine noun and variable adjective with regular plurals. |
| Formation | Borrowed from French 'acanthoptérygien', originating from Greek roots. |
| Spelling / Pronunciation | [a.kan.top.te.ri.ˈd͡ʒi.an] |
| Source | Encyclopedia of Aquatic Organisms and Fish Taxonomy |
Contextual Usage Examples
RO: Bibanul și șlăul sunt exemple clasice de pești de tip acantopterigian din fauna noastră piscicolă.
EN: The perch and the pike-perch are classic examples of acanthopterygian fishes in our local aquatic fauna.
RO: Morfologia unui acantopterigian îi oferă un avantaj hidrodinamic major în fața prădătorilor rapizi.
EN: The morphology of an acanthopterygian provides it with a major hydrodynamic advantage against fast predators.
RO: Cercetătorul a clasificat noul specimen marin în grupul extins al acantopterigienilor datorită structurii osoase a dorsalei.
EN: The researcher classified the new marine specimen within the large group of acanthopterygians due to the bony structure of its dorsal fin.
Idioms & Phrases
Faună acantopterigiană / Acanthopterygian fauna
RO: Totalitatea speciilor de pești cu raze țepoase care populează un anumit ecosistem acvatic sau bazin hidrografic.
EN: The totality of spiny-finned fish species populating a specific aquatic ecosystem or hydrographic basin.
Rază acantopterigiană rigidă / Rigid acanthopterygian ray
RO: Elementul osos ascuțit și dur, nesegmentat, care susține membrana înotătoarei anterioare la acești pești.
EN: The sharp, hard, unsegmented bony element that supports the anterior fin membrane in these fishes.
Evoluție de tip acantopterigian / Acanthopterygian-type evolution
RO: Procesul evolutiv de diversificare rapidă caracterizat prin specializarea scheletului facial și a sistemului defensiv spinos.
EN: The evolutionary process of rapid diversification characterized by the specialization of the facial skeleton and the spiny defensive system.
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