Development
Fertile Harlequin Rasbora eggs require approximately 18 hours to hatch at a temperature of 28°C. Upon hatching, the fry are translucent, around 3 to 4 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. Once this process is completed, the fishes become free-swimming, and at this stage, require very fine sizes of food such as live infusoria for a period of 7 to 14 days, after which the fry are able to feed upon newly hatched Brine Shrimp. If infusoria are unavailable, commercial prepared foods for egglayer fry may also be used.
The Harlequin Rasbora takes approximately 8 to 10 weeks for the fry to assume full adult colouration.
Read more about this topic: Harlequin Rasbora
Famous quotes containing the word development:
“The development of civilization and industry in general has always shown itself so active in the destruction of forests that everything that has been done for their conservation and production is completely insignificant in comparison.”
—Karl Marx (1818–1883)
“I can see ... only one safe rule for the historian: that he should recognize in the development of human destinies the play of the contingent and the unforeseen.”
—H.A.L. (Herbert Albert Laurens)
“Good schools are schools for the development of the whole child. They seek to help children develop to their maximum their social powers and their intellectual powers, their emotional capacities, their physical powers.”
—James L. Hymes, Jr. (20th century)