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The sea cucumber ranges in size from 11 to 25 centimeters (4.3 to 9.8 in). [7] Its most distinct feature is its coloring, which is dictated by size: small enypniastes are a bright pink, and larger individuals are a more reddish-brown color. It is also semi-transparent, and its intestine can be seen through its body, especially after feeding. [8]
The female flower has a single stigma and is borne on a short stalk at the base of the flower panicle, with the spiky globular inferior ovary being immediately beneath. [3] The fruit is a prickly, inflated capsule up to 5 cm (2 in) long with two pores and four seeds. [2] It resembles a tiny spiny water melon, or cucumber, but is inedible. [4]
The Philippine "Balatan" or Sea cucumber breeding/harvesting. Sea cucumbers to be used as broodstock are either collected from the wild or are taken from commercial harvests. [2] [3] Only the largest and healthiest individuals are used for broodstock, as the success of a hatchery relies on the healthy condition of brood individuals. [2]
The Philippine balatan or sea cucumber breeding/harvesting. Sea cucumbers destined for food are traditionally harvested by hand from small watercraft, a process called "trepanging" after the Indonesian Malay word for sea cucumber teripang. [3] They are dried for preservation, and must be rehydrated by boiling and soaking in water for several days.
Live fish food include earthworms, sludge worms, water fleas, bloodworms, and feeder fish. Food for larvae and young fish include infusoria (Protozoa and other microorganisms), newly hatched brine shrimp and microworms. These are the most preferred type of food for fish, but are difficult to get and can be quite expensive.
Sea apple is the common name for the colorful and somewhat round sea cucumbers of the genus Pseudocolochirus, found in Indo-Pacific waters. [2] [3] Sea apples are filter feeders with tentacles, ovate bodies, and tube-like feet. As with many other holothurians, they can release their internal organs or a toxin into the water when stressed. [3] [4]
When feeding, it bends its body down towards the substrate, presses the ring of oral papillae against the surface and opens its mouth wide. It then extends and retracts its short tentacles repeatedly and "vacuums" up sediment, extracts the nutritious part and deposits the unmetabolised portion as a sausage-like string of droppings.
In the current technology, fish feed extruders play a key role in production lines. Although the majority of the process of the fish feed production occurs in the extruder, grinding and mixing can highly affect the quality of the final product. [14] Water is added and the resulting paste is extruded through holes in a metal plate. The diameter ...