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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]
All lungfish demonstrate an uninterrupted cartilaginous notochord and an extensively developed palatal dentition. Basal ("primitive") lungfish groups may retain marginal teeth and an ossified braincase, but derived lungfish groups, including all modern species, show a significant reduction in the marginal bones and a cartilaginous braincase.
The builder may also choose to plant additional native trees and other flora after construction to help the property blend with natural surroundings. In some planned developments, natural landscaping is the requirement. Builders may not remove trees larger than a specific diameter and owners may not arbitrarily cut trees without a permit.
The common seadragon or weedy seadragon (Phyllopteryx taeniolatus) is a marine fish of the order Syngnathiformes, which also includes the similar pipefishes, seahorses, and trumpetfishes among other species.
The Syngnathiformes / ˈ s ɪ ŋ (ɡ) n ə θ ɪ f ɔːr m iː z / are an order of ray-finned fishes that includes the leafy seadragons, sea moths, trumpetfishes and seahorses, among others.
Even though it has not been reliably observed, some authors have mentioned about them having a tree climbing ability. [ citation needed ] Their method of terrestrial locomotion uses the gill plates as supports, and the fish pushes itself using its fins and tail.
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Pond loaches are quite active, athletic swimmers, with their activity levels, allegedly, being influenced by oncoming storms or changes in barometric pressure (hence the name "weather" loach). They are generally active throughout the day, only resting intermittently, but become notably crepuscular and nocturnal as the day progresses, foraging ...