|
Red Saddleback Anemonefish
The red saddleback anemonefish, ''Amphiprion ephippium'', also known as the saddle anemonefish, is a marine fish belonging to the family Pomacentridae, the clownfishes and damselfishes. Characteristics of Anemonefish Clownfish or anemonefish are fishes that, in the wild, form symbiotic mutualisms with sea anemones and are unaffected by the stinging tentacles of the host anemone, see . The sea anemone protects the clownfish from predators, as well as providing food through the scraps left from the anemone's meals and occasional dead anemone tentacles. In return, the clownfish defends the anemone from its predators, and parasites. Clownfish are small-sized, , and depending on species, they are overall yellow, orange, or reddish or blackish color, and many show white bars or patches. Within species there may be color variations, most commonly according to distribution, but also based on sex, age and host anemone. Clownfish are found in warmer waters of the Indian and Pacif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marcus Elieser Bloch
Marcus Elieser Bloch (1723–1799) was a German physician and naturalist who is best known for his contribution to ichthyology through his multi-volume catalog of plates illustrating the fishes of the world. Brought up in a Hebrew-speaking Jewish family, he learned German and Latin and studied anatomy before settling in Berlin as a physician. He amassed a large natural history collection, particularly of fish specimens. He is generally considered one of the most important ichthyologists of the 18th century, and wrote many papers on natural history, comparative anatomy, and physiology. Life Bloch was born at Ansbach in 1723 where his father was a Torah writer and his mother owned a small shop. Educated at home in Hebrew literature he became a private tutor in Hamburg for a Jewish surgeon. Here he learned German, Latin and anatomy. He then studied medicine in Berlin and received a doctorate in 1762 from Frankfort on the Oder with a treatise on skin disorders. He then became a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
External Fertilization
External fertilization is a mode of reproduction in which a male organism's sperm fertilizes a female organism's egg outside of the female's body. It is contrasted with internal fertilization, in which sperm are introduced via insemination and then combine with an egg inside the body of a female organism. In animals, external fertilization typically occurs in water or a moist area to facilitate the movement of sperm to the egg. The release of eggs and sperm into the water is known as spawning. In motile species, spawning females often travel to a suitable location to release their eggs. However, sessile species are less able to move to spawning locations and must release gametes locally. Among vertebrates, external fertilization is most common in amphibians and fish. Invertebrates utilizing external fertilization are mostly benthic, sessile, or both, including animals such as coral, sea anemones, and tube-dwelling polychaetes. Benthic marine plants also reproduce through external ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Australian Museum
The Western Australian Museum is a statutory body, statutory authority within the Culture and the Arts Portfolio, established under the ''Museum Act 1969''. The museum has six main sites. The state museum, WA Museum Boola Bardip, is located in the Perth Cultural Centre. The other sites are: the WA Maritime Museum and WA Shipwrecks Museum in Fremantle (suburb), Fremantle, the Museum of the Great Southern in Albany, Western Australia, Albany, the Museum of Geraldton in Geraldton, and the Museum of the Goldfields in Kalgoorlie, Kalgoorlie-Boulder. History Established in 1891 in the Perth Gaol, Old Perth Gaol, it was known as the Geological Museum and consisted of geological collections. In 1892, ethnological and biological exhibits were added, and in 1897, the museum officially became the Western Australian Museum and Art Gallery. The museum employed collectors to obtain series of specimens; J. T. Tunney, Tunney ventured across the state from 1895 to 1909 obtaining animals and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sebae Anemone
The sebae anemone (''Radianthus crispa''), also known as leathery sea anemone, long tentacle anemone, or purple tip anemone, is a species of sea anemone in the family Stichodactylidae and native to the Indo-Pacific. It was first described in 1834 by Wilhelm Hemprich and Christian Gottfried Ehrenberg as ''Actinia crispa''. Description The sebae anemone is characterized by a flared oral disc that reaches between 20 and 50 cm in diameter and with multiple and long tentacles measuring 10 to 15 cm. These tentacles have rounded tip and the end is often colored with a purple or blue spot. The column, external structure of an anemone visible when the animal is closed, is gray in color and dotted with sticky whitish "warts". The sea anemone, being member of the Hexacorallia, usually carries a number of tentacles multiple of six and they are positioned in concentric circles. These are light beige to purple. Distribution and habitat The sebae anemone is widespread throughout th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bubble-tip Anemone
Bubble-tip anemone (''Entacmaea quadricolor'') is a species of sea anemone in the Family (biology), family Actiniidae. Like several anemone species, ''E. quadricolor'' can support several Amphiprioninae, anemonefish species, and displays two growth types based on where they live in the water column, one of which gives it the common name, due to the bulbous tips on its tentacles. Distribution ''Entacmaea quadricolor'' is widespread throughout the tropical waters of the Indo-Pacific area, including the Red Sea. ''E. quadricolor'' anemones appear in a variety of Morph (zoology), morphs, including rose, orange, red, and standard green. This sea anemone can grow to be up to in diameter, and obtains the majority of its energy from solar radiation via its symbiotic zooxanthellae. A characteristic of ''E. quadricolor'' is its ability to maintain a symbiotic relationship with the anemonefish, which can be "hosted" by the anemone by providing it with defence against predators ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
