rasbora वाक्य
उदाहरण वाक्य
मोबाइल
- Despite the relatively uniform water chemistry of its various habitats, the harlequin rasbora is an adaptable fish in the aquarium, provided that migration of the fishes to waters of differing chemical parameters is conducted with due care.
- The conditions thus resemble those found on a different continent, namely the blackwater habitats of South America, and the water chemistry of the Asian habitats of the harlequin rasbora is accordingly similar to that of the Rio Negro.
- Like other rasboras, the eye-spot rasbora is a shoaling fish, and should be maintained in the aquarium as a group consisting of a minimum of 6 individuals, a larger number being preferable if space permits.
- The "'blackline rasbora "'( " Rasbora borapetensis " ) is a fish of the family Cyprinidae found in Asia in the Mekong, Chao Phraya, and Mae Klong basins, and also the northern Malay Peninsula.
- The "'blackline rasbora "'( " Rasbora borapetensis " ) is a fish of the family Cyprinidae found in Asia in the Mekong, Chao Phraya, and Mae Klong basins, and also the northern Malay Peninsula.
- Feeding the harlequin rasbora presents no problems to the aquarist, as the fish enthusiastically accepts prepared foods, though for best health, a variety of these should be given, preferably interspersed with feedings of live foods such as " Daphnia ".
- An aquarium intended to house harlequin rasboras should be planted with live plants, with some open areas for swimming provided between stands of plants such as " Cryptocoryne " species, these being among the plants that inhabit the harlequin rasbora's native waters.
- In older literature they are therefore referred to as members of " Rasbora " and following Liao et al . ( 2010 ) the genus is a member of the rasborin sub-group within the subfamily Danioninae ( the other sub-group contains the danionins ).
- The harlequin rasbora is a fish that has an approximately lozenge-shaped body, whose basal colour from the head to the caudal peduncle is an orange-pink, the exact hue varying depending upon such factors as water conditions and the original population from which the fish was obtained.
- "Boraras " is an anagram of Rasbora ( a generic term for the group that includes this species ), highlighting the reversal of the ratio of abdominal and caudal vertebrae in this species . " Merah " is the Indonesian word for red due to its body colour.
- Fertile harlequin rasbora eggs require approximately 18 hours to hatch at a temperature of 28 �C . Upon hatching, the fry are translucent, around three to four millimetres long, and remain attached to the leaf upon which the eggs were laid for a further 12 to 24 hours, during which the yolk sac is absorbed.
- The clade formed by these two genera was found to be sister to a clade including many danionin genera as well as some rasborin genera such as " Rasbora ", " Trigonostigma ", and " Boraras ", making the danionin group paraphyletic without these rasborin genera based on these results.
- Their results differed from those of Liao et al ., and their conclusion was to synonymise the four new genera plus " Boraras " and " Trigonostigma " with " Rasbora ", based on an incomplete knowledge of relationships within the group, an approach they describe as " more conservative ".
- Being mainly an open water fish in the wild, using plant thickets for refuge from predation when danger threatens, the eye-spot rasbora is at home in a well-lit aquarium facilitating the growth of more demanding aquarium plants, though the fish is likely to appreciate the thoughtful provision of some floating plants for additional cover.
- The temperature range of the harlequin rasbora is usually cited as 22 �C to 27 �C ( 72 �F to 81 �F ) ( for example, Walker, 1971, p . 101 ) but the fish is capable of living in temperatures from 21 �C to 28 �C, and indeed usually breeds at around 28 �C ( 82.4 �F ).
- The harlequin rasbora is a shoaling fish, and should be kept in a group comprising a minimum of six individuals, though shoals of larger numbers are preferable not only from the standpoint of the well-being of the fish, but from an aesthetic standpoint a large shoal of harlequin rasboras presents a striking vista even to non-fishkeepers, and their active disposition in the water adds to the spectacle.
- Bushy plants such as " Cabomba " may also be used in the aquarium, but this genus of plants requires intense lighting, while the " Cryptocoryne " and " Aponogeton " species prefer more subdued lighting, as does the harlequin rasbora, so if the aquarist wishes to have a variety of plants in the aquarium, other species that prefer subdued lighting are better choices.
- B . brigittae ", the only species involved in the study ) is included in clade three alongside " Horadandia atukorali ", " Rasboroides vaterifloris ", " Trigonostigma heteromorpha " and three species previously included in Rasbora but moved into new genera by the authors : " Trigonopoma gracile ", " T . pauciperforatum " and " Rasbosoma spilocerca ".
- Being a peaceful species, the harlequin rasbora may be maintained in a community aquarium set-up with other similarly sized and peaceful aquarium fishes, including many of the small characins from South America ( the similarity in water chemistry of the two habitats for these different fishes has already been covered ), assorted small barbs, danios, other small rasboras, " Corydoras " catfishes, " Otocinclus " catfishes and others.
- The specific name " heteromorpha ", translating from the Greek as " differently shaped ", alludes to the fact that the body shape of this species differs from that of other members of the genus " Rasbora ", and as a consequence of this and assorted other factors ( including the difference in breeding technique ), the fish was assigned to a new genus, " Trigonostigma ", and is thus now known to science as " Trigonostigma heteromorpha ".
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