6.4 Milkfish (Chanos chanos)
Milkfish are specialized in several respects. The body shape, the streamlined cover over the eyes, and the widely forked tail all go with a fast-swimming life style. Fine (almost membranous) gill rakers suggest filter feeding, making a designation as carnivore, omnivore, or herbivore impossible since plankton is a mixture of many life forms, including some which are too simple to be clearly plant or animal. Milkfish are most frequently designated as microphagus planktovores. A specialized epibranchial organ above and behind the gills may help to concentrate microplankton, although no one has really demonstrated how it might do so. The stomach is a simple tube, somewhat convoluted, and of moderate size. The pyloric end of the stomach has thick, muscular walls and is usually described as a gizzard. The pyloric region of the long, narrow intestine has numerous pyloric caecae, also of small diameter. The swim bladder and the lining of the visceral cavity are membranous, similar to those in salmonids except for being jet black (Figure 1d).
In general, milkfish are cultured in enriched, saltwater lagoons in which they swim rapidly, straining their food from the typically turbid water
6.4 Milkfish (Chanos chanos)
Milkfish are specialized in several respects. The body shape, the streamlined cover over the eyes, and the widely forked tail all go with a fast-swimming life style. Fine (almost membranous) gill rakers suggest filter feeding, making a designation as carnivore, omnivore, or herbivore impossible since plankton is a mixture of many life forms, including some which are too simple to be clearly plant or animal. Milkfish are most frequently designated as microphagus planktovores. A specialized epibranchial organ above and behind the gills may help to concentrate microplankton, although no one has really demonstrated how it might do so. The stomach is a simple tube, somewhat convoluted, and of moderate size. The pyloric end of the stomach has thick, muscular walls and is usually described as a gizzard. The pyloric region of the long, narrow intestine has numerous pyloric caecae, also of small diameter. The swim bladder and the lining of the visceral cavity are membranous, similar to those in salmonids except for being jet black (Figure 1d).
In general, milkfish are cultured in enriched, saltwater lagoons in which they swim rapidly, straining their food from the typically turbid water
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