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An aquatic animal is any animal, whether vertebrate or invertebrate, that lives in bodies of water for all or most of its lifetime. [1] Aquatic animals generally conduct gas exchange in water by extracting dissolved oxygen via specialised respiratory organs called gills, through the skin or across enteral mucosae, although some are evolved from ...
Common name Scientific name Image Size Remarks Tank size Temperature range pH range Water Hardness Bristlenose pleco, bushynose pleco: Ancistrus spp.: The bristlenose genus has at least 59 identified species and many others yet to be named. [16]
Hydra (/ ˈ h aɪ d r ə / HY-drə) is a genus of small freshwater hydrozoans of the phylum Cnidaria.They are native to the temperate and tropical regions. [2] [3] The genus was named by Linnaeus in 1758 after the Hydra, which was the many-headed beast of myth defeated by Heracles, as when the animal has a part severed, it will regenerate much like the mythical hydra’s heads.
Cnidaria. Cnidaria (/ nɪˈdɛəriə, naɪ -/ nih-DAIR-ee-ə, NY-) [ 4 ] is a phylum under kingdom Animalia containing over 11,000 species [ 5 ] of aquatic animals found both in fresh water and marine environments (predominantly the latter), including jellyfish, hydroids, sea anemones, corals and some of the smallest marine parasites.
Aquatic mammal. An Amazon river dolphin (Inia geoffrensis), a member of the infraorder Cetacea of the order Cetartiodactyla. Aquatic mammals and semiaquatic mammals are a diverse group of mammals that dwell partly or entirely in bodies of water. They include the various marine mammals who dwell in oceans, as well as various freshwater species ...
A fish (pl.: fish or fishes) is an aquatic, anamniotic, gill-bearing vertebrate animal with swimming fins and a hard skull, but lacking limbs with digits.Fish can be grouped into the more basal jawless fish and the more common jawed fish, the latter including all living cartilaginous and bony fish, as well as the extinct placoderms and acanthodians.
The Blue Angelfish does not have the striking blue crown or other blue highlights of the Queen Angelfish. This species has been known to reproduce with the Queen Angelfish, making a half breed that looks like a mixture between the two species. 45 cm (17.7 in) [7] Bluespotted angelfish.
Freshwater fish. Tench are common freshwater fish throughout temperate Eurasia. Freshwater fish are fish species that spend some or all of their lives in bodies of fresh water such as rivers, lakes and inland wetlands, where the salinity is less than 1.05%. These environments differ from marine habitats in many ways, especially the difference ...