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The peaceful betta or crescent betta (Betta imbellis) is a species of gourami native to Southeast Asia. Betta imbellis has a pair of suprabranchial chambers that each house a labyrinth organ, a complex bony structure lined with thin, highly vascularised respiratory epithelium. The labyrinth organ is a morpho‐physiological adaptation that ...
The act of spawning itself is called a "nuptial embrace", for the male wraps his body around the female; around 10–40 eggs are released during each embrace, until the female is exhausted of eggs. With each deposit of eggs, the male releases milt into the water, and fertilisation takes place externally. During and after spawning, the male uses ...
The male makes and defends the nest, and fans the eggs to remove silt and other debris until the larvae hatch. Some longear females produce 4,000 eggs. [8] They spawn in groups but do not form large colonies. Longear sunfish are better at getting food in moving waters than still waters; this may explain why they are more abundant in streams ...
Gouramis, or gouramies / ɡʊˈrɑːmi /, are a group of freshwater anabantiform fish that comprise the family Osphronemidae. The fish are native to Asia —from the Indian Subcontinent to Southeast Asia and northeasterly towards Korea. The name "gourami", of Indonesian origin, is also used for fish of the families Helostomatidae and Anabantidae.
The fork tailed paradisefish (often just called paradise fish, paradise-fish, paradisefish), or paradise gourami (Macropodus opercularis) is a species of gourami found in most types of fresh water in East Asia, ranging from the China to northern Vietnam. [3] This species can reach a standard length of 6.7 cm ( in), though most are only about 5. ...
Betta pallifina are a mouthbrooding species of betta. The male is the caretaker, holding the fry in his mouth for up to three weeks. In captivity, these fish are very easy to breed. During spawning, which can take several hours, the male embraces the female. Fertilized eggs are gathered into the male's mouth and he retreats to brood the fry ...
Eastern giant swallowtail butterflies must correctly identify their host plants by antennal sensitivity to the specific volatile compounds in the plants. A study found that antennal response to these volatiles depends upon the concentration of the volatiles, the host plant of origin (whether it is a primary or secondary host), and the sex of ...
Pachliopta aristolochiae. (Fabricius, 1775) [1] Synonyms. Atrophaneura aristolochiae. Pachliopta aristolochiae, the common rose, [2][3] is a species of swallowtail butterfly belonging to the genus Pachliopta, the roses, or red-bodied swallowtails. It is a common butterfly which is extensively distributed across south and southeast Asia. [2][3]