搜尋結果
6 天前 · Coelacanths ( / ˈsiːləkænθ / ⓘ SEE-lə-kanth) (order Coelacanthiformes) are an ancient group of lobe-finned fish (Sarcopterygii) in the class Actinistia. [2] [3] As sarcopterygians, they are more closely related to lungfish and tetrapods (which includes amphibians, reptiles, birds and mammals) than to ray-finned fish .
4 天前 · Catfish (or catfishes; order Siluriformes / s ɪ ˈ lj ʊər ɪ f ɔːr m iː z / or Nematognathi) are a diverse group of ray-finned fish.Named for their prominent barbels, which resemble a cat's whiskers, catfish range in size and behavior from the three largest species alive, the Mekong giant catfish from Southeast Asia, the wels catfish of Eurasia, and the piraíba of South America, to ...
其他人也問了
Isetta pardalotos a new species of fighting fish?
Is Hyalobagrus a new genus of bagrid catfish?
Are molluscs members of the Lophotrochozoa?
2 天前 · This is a list of freshwater fish species found in Sumatra, Indonesia. This list also includes freshwater fish found on small islands around Sumatra, such as Simeulue, Nias Islands, Mentawai Islands, Enggano, Riau Islands (except Natuna and Anambas), Lingga Islands, Bangka and Belitung.
1 天前 · Formation The Amu Darya river flowed into the Caspian Sea via the Uzboy Channel until the Holocene.Geographer Nick Middleton believes it did not begin to flow into the Aral Sea until that time.[13] [14] Ecology The Syr Darya sturgeon (Pseudoscaphirhynchus fedtschenkoi) was a primitive species of fish possibly driven to extinction by the shrinkage of the Aral Sea.
1 天前 · A dog with rabies, a zoonosis. A zoonosis ( / zoʊˈɒnəsɪs, ˌzoʊəˈnoʊsɪs /; [1] plural zoonoses) or zoonotic disease is an infectious disease of humans caused by a pathogen (an infectious agent, such as a bacterium, virus, parasite, or prion) that can jump from a non-human (usually a vertebrate) to a human and vice versa. [1] [2] [3]
4 天前 · Coleoidea. Paracoleoidea † (disputed) A cephalopod / ˈsɛfələpɒd / is any member of the molluscan class Cephalopoda / sɛfəˈlɒpədə / ( Greek plural κεφαλόποδες, kephalópodes; "head-feet") [3] such as a squid, octopus, cuttlefish, or nautilus.
3 天前 · Mollusca is the second-largest phylum of invertebrate animals, after Arthropoda; members are known as molluscs or mollusks [a] ( / ˈmɒləsks / ). Around 76,000 extant species of molluscs are recognized. [3] The number of fossil species is estimated between 60,000 and 100,000 additional species. [4] The proportion of undescribed species is ...
