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Actinopterygii (/ ˌ æ k t ɪ n ɒ p t ə ˈ r ɪ dʒ i aɪ /; from Ancient Greek ἀκτίς (aktis) 'having rays' and πτέρυξ (ptérux) 'wing, fins'), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish [2] that comprise over 50% of living vertebrate species. [3]
Both its major subgroups are successful today: Actinopterygii includes most extant bony fish species, and Sarcopterygii includes the tetrapods. Euteleostomes originally all had an endochondral bone, fins with lepidotrichs (fin rays), jaws lined by maxillary, premaxillary, and dentary bones composed of dermal bone, and lungs.
Acanthopterygii (meaning "spiny-finned one") is a superorder of bony fishes in the class Actinopterygii.Members of this superorder are sometimes called ray-finned fishes for the characteristic sharp, bony rays in their fins; however this name is often given to the class Actinopterygii as a whole.
The exact position in the phylogenetic tree is debated. Andreolepis has been considered a primitive actinopterygian, partly based on scale characteristics and the presence of ganoine, a homologue to true enamel, [8] which was thought to be limited to actinopterygians whereas true enamel is limited to sarcopterygians.
Males also grows to a larger maximum size than females. Stress coloration is similar to normal coloration but much paler. This species belongs to the so-called Mbuna group of haplochromine cichlids, and like most Mbuna it is highly territorial, with parental care for the offspring (maternal mouthbrooding).
Pareutropius debauwi is a species that belong to the Order Actinopterygii, ray-finned fishes, and can be placed in the Schilbeidae family, Schilbid catfishes. This family includes 9 genera and 46 species. The common name for Pareutropius debauwi is the African glass catfish. [2]
Actinopterygii: Order: Cichliformes: Family: Cichlidae: Genus: Andinoacara: ... Both parents care for their eggs and fry until the fry are free-swimming for a week. [2]
Unfortunately, Tree of Life is often quite out of date (ca. ten years, some times), and it has, for example, nothing for Perciformes, which are most of the fish I have worked on. But in the absence of anything else — FishBase doesn't give any info higher than family, and ITIS seems a bit iffy sometimes — it's all I have access to...