Notes on the external sex characters of Chanos chanos (Forskal) spawners
In the present study, no visible differences between the sexes of C. chanos with reference to external features such as colouration, shape of head, snout and operculum, presence of tubercles or nasal pores, length, size and shape as well as any roughness in the various fins, could be found. However, the anal region of the mature milkfish (sabalo) exhibits discernible anatomical differences in the male and female. The male has two main openings visible externally: the anterior anus and the posterior urogenital opening at the tip of the urogenital papilla. The female has three main openings instead of two: the anteriormost anus, followed by the genital pore and the urinary pore located posterior to the genital pore at the tip of the urogenital papilla. Internal examinations were also made on both sexes. In ripe sabalo, it is easier to distinguish the sexes since milk oozes out of the urogenital pore by pressing the abdomen of the ripe male fish. Gravid females are identified by their distended abdomens.
Chaudhuri, H., Juario, J. V., Samson, R., & Tiro, L. B. (1976). Notes on the external sex characters of Chanos chanos (Forskal) spawners.
Fisheries Research Journal of the Philippines, 1(2), 76-85. http://hdl.handle.net/10862/1070
- AQD Journal Articles 
Showing items related by title, author, creator and subject.
Annual report 1977 Southeast Asian Fisheries Development Center, Aquaculture Department (Aquaculture Department, Southeast Asian Fisheries Development Center, 1978)
Development and management of milkfish broodstock Reyes, Ofelia S.; de Jesus-Ayson, Evelyn Grace T.; Eullaran, Bernadita E.; Corre Jr., Valeriano L.; Ayson, Felix G. (Aquaculture Department, Southeast Asian Fisheries Development Center, 2015)The manual provides developed and refined techniques for collection and transport of spawned eggs and larvae, as well as larval rearing. It also describes the necessary facilities for maintaining milkfish broodstock. Guidelines ...
Seed production of milkfish Chanos chanos Forsskal Reyes, Ofelia; Eullaran, Bernadita; Ayson, Evelyn Grace (Aquaculture Department, Southeast Asian Fisheries Development Center, 2016)A 26-page manual describing the site selection, hatchery design, spawning, larval rearing, natural food production, and economic analysis for milkfish.