罗非鱼 英文介绍
发布网友
发布时间：2022-07-14 23:37
共3个回答
热心网友
时间：2023-10-13 04:48
Tilapia is a termed used for cichlids fish of the genus Tilapia as well as a few other cichlids that not really are tilapia fish. The genus tilapia contains more than 100 species and is originally found in Africa and parts of the Middle East but can today be found in a number of other waters around the world. Tilapia fish are appreciated both as aquarium fish and as food fish. Tilapia as a food source has played a very important role in preventing hunger in some areas as thsi fish is easy to breed and can be a very welcome source of protein in hungry struck areas. Many people hope that Tilapia fish can help end hunger and malnutrition around the world. This site is devoted both to tilapia as a food fish and to kepping tilapia fish in aquarium tanks.
Tilapia
Tilapia has been farmed for food for over 2500 years. Tilapia farming was for a long time confined to the middle east and some parts of Africa but has in recent years become a world wide instry with Asia and South and central American as large procers of Tilapia.
Tilapia is an extremely suitable fish for farming e to the fact they are fast growing and very tolerant in regards to water conditions and are generally speaking very hardy fish. The Tilapia fish that are being farmed are mainly species that aren’t true tilapias but rather from the group of fish that is called tilapia despite the fact that they in reality aren’t. The most commonly farmed Tilapia fish are found in the genus Oreochromis and Sarotherodon.
Tilapia fish value as food fish has lead to them being introced to a large amount of waters around the world and they have established themselves in even more areas by escaping from fish farms that were breeding tilapia. This has lead to a situation where you today can find tilapia in tropical waters around the world.
Tilapia in Aquarium
Tilapia fish are very easy to keep in aquarium tanks for the same reasons that make them suitable for farming. A wide variety of tilapia species are available in the aquarium trade as well as number of the species that are called Tilapia but. Are found in the genus Oreochromis and Sarotherodon. Some of the most popular species are Tilapia buttikoferi and Tilapia mariae (Tiger Tilapia)
Tilapia cichlids are suitable for every how keeps aquariums regardless if you are a beginner or an advanced aquarium keeper. Tilapia fish can be kept in a long row of different aquarium setups depending on which species you choose to keep. You can find a tilapia species that suits almost any aquarium setup since there are both small and large species with various aggression levels. The only requirement to keep Tilapia in aquarium is that you have an aquarium of at least 40 gallon / 150 L. Larger tilapia species require larger aquarium tanks. Browse this site to find more information about how to keep and breed Tilapia fish in aquarium tanks.
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Large-scale commercial culture of tilapia is limited almost exclusively to the culture of three species: Oreochromis niloticus, O. mossambica and O. aureus. Of the three tilapia species with recognized aquaculture potential, the Nile tilapia, O. niloticus, is by far the most commonly used species in fish farming.
Growout strategies for tilapia range from the simple to the very complex. Simple strategies are characterized by little control over water quality and food supply and by low fish yields. As greater control over water quality and fish nutrition are imposed, the proction cost and fish yield per unit area increases. Across this spectrum, there is a progression from low to high management intensity.
In traditioanal pond culture of tilapia, proper environmental conditions are maintained by balancing the inputs of feed with the natural assimilative capacity of the pond. The pond’s natural biological proctivity (algae, higher plants, zooplankton and bacteria) serves as a biological filter that converts the wastes through natural biological processes.
Increasing stocking densities places increasing demands on the proction system. Additional energy inputs in the form of labor, water exchange, aeration and feeds are all required to sustain the intensive system. As pond proction intensifies and feed rates increase, supplemental aeration and some water exchange are required to maintain good water quality. For densities above 1.5-kg per square meter, aeration is usually required. There is a point where the incremental returns are not worthy of the additional inputs and risks. Increasing the intensity of the system does not necessarily reflect an increase in profitability.
All tilapia proction systems must provide a suitable environment to promote the growth of the aquatic crop. Critical environmental parameters include the concentrations of dissolved oxygen, un-ionized ammonia nitrogen, nitrite nitrogen, and carbon dioxide in the water. Other important parameters include nitrate concentration, pH, and alkalinity levels within the system. To proce tilapia in a cost effective manner, proction systems must be capable of maintaining proper levels of these water quality variables ring periods of rapid fish growth. To provide for such growth, tilapia are fed high protein pelleted diets at rates ranging from 1.0% to 30% of their body weight per day depending upon their size and species.
Numerous options for holding broodfish, fry, fingerlings, juveniles, sub-alt and alt tilapias are available to the prospective farmer. The options include ponds, tanks, raceways, hapas and cages. Tanks and raceways involve considerably greater expense to construct but offer greater control. They are usually used in intensive and super-intensive culture of tilapias. Ponds are much cheaper to construct and allow management to stimulate natural proctivity more readily. The major drawback of pond culture of tilapias is the greater risk of uncontrolled reproction, which will occur if certain measures are not taken to minimize this possibility. Ponds are used in extensive, semi-intensive and intensive tilapia proction. Pond culture is by far the most common method being employed throughout Latin America because it is the cheapest method and also is one of the best.
Ponds are the traditional and inexpensive way to hold spawning populations of broodfish. In some parts of the world, the pond system has been made more efficient through the use of cages or net enclosures (hapas). Basically, the hapas are fine mesh net enclosures that are about 40 square meters in size and arranged into units within a larger pond. This segregates the pond into more easily managed units. On a per unit area basis, tanks are the most efficient method of collecting and raising fry, followed by hapas and simple ponds.
In aquaculture, no two situations are alike. Each project must be carefully crafted to meet the expectations of the owners, while giving diligent consideration to the limitations and strengths inherent in the proposed venture.
Marketing the Proct
The total aquaculture proction of tilapia was reported to be 1,265,800 tons in 2000. International trade is growing rapidly, especially between Central American procers (Costa Rica, Ecuador and Honras) and the United States, and between Asian procers (Taiwan, China, Indonesia and Thailand) and the United States and Japan. There is also modest trade between Jamaica and the United Kingdom. The largest exporter, Taiwan, supplies Japan with high-quality tilapia fillets for the sashimi market, and ships frozen tilapia to the United States market (40,000 tons in 2001). Taiwan exports about 70 percent of its domestic tilapia proction. Thailand and Indonesia export less than 5 percent of their proction.
Viet Nam has also recently entered the world tilapia market, and China exported 12,500 tons to the United States in 2001. Zimbabwe, thanks to the efforts one vertically intigrated operation, now also proces fresh and frozen fillets for the EC market.
In the United States, tilapia is now the third most imported aquaculture proct by weight (56,300 tons in 2001), after shrimp and salmon. United States imports have been growing strongly and are forecast to grow further in the future. Long-term tilapia prices are expected to decrease, and this should lead to increased exports to the United States, as well as to Europe, which is still a largely undeveloped market for tilapia.
热心网友
时间：2023-10-13 04:49
Any of numerous, mostly freshwater, fish species (genus Tilapia, family Cichlidae), native to Africa.
They resemble North American sunfishes; one species grows to 20 lbs (9 kg). Tilapia species are easy to raise and harvest for food; they grow rapidly, resist disease, and eat readily abundant algae and zooplankton. They have been used in warm-water aquaculture systems since the early Egyptian civilization and have been introced into many freshwater habitats. See also cichlid.
热心网友
时间：2023-10-13 04:49
TILAPIA
1/4
c.
celery
1/4
c.
onion,
chopped
1/4
c.
sweet
red
pepper,
chopped
3
tbsp.
butter
3
tbsp.
flour
Salt
and
pepper
to
taste
1/2
tsp.
dried
tarragon
1/2
tsp.
dried
basil
1
1/4
c.
milk
1
c.
Mozzarella
cheese,
shredded
1
1/2
lbs.
Rain
Forest
Tilapia
fillets
In
a
medium
skillet,
saute
the
celery,
onions
and
sweet
red
pepper
in
butter
until
tender.
Add
the
salt,
pepper,
tarragon,
basil
and
milk;
mix
well.
Cook
for
1
minute,
stirring
constantly
until
thickened.
Add
the
cheese
and
stir
until
melted.
Do
not
boil.
Rinse
the
Tilapia
fillets
in
cold
water
and
drain
thoroughly.
Place
the
fish
in
a
12
x
8
x
2
inch
baking
dish;
spoon
the
sauce
evenly
over
the
fish.
Bake
at
425
degrees
for
8
to
10
minutes,
or
until
the
fish
flakes
evenly
when
tested
with
a
fork.
Serves
4.
TALAPIA
WITH
PESTO
Pesto:
2
bunches
of
fresh
basil,
chopped
1/2
cup
olive
oil
1
garlic
clove,
minced
1
package
Ricotta
cheese
Fish
Dish:
4-6
pieces
tilapia
pesto
sauce
(from
above
recipe)
1-2
large
ripe
tomatoes,
1/2
inch
sliced
Pesto:
In
a
blender,
combine
all
ingredients
and
puree.
Continue
to
add
more
olive
oil
if
sauce
is
too
dry
for
your
preference.
Keep
in
mind
you
want
the
pesto
sauce
to
be
more
on
the
thicker
side.
Fish:
Arrange
fish
in
a
baking
dish
or
pan.
Spoon
pesto
sauce
over
each
fillet
of
fish.
Place
a
1-2
slice
(s)
of
tomato
on
top
of
each
fillet.
Bake
at
350°F
for
20-30
minutes
or
until
fish
is
cooked
throughout.
Additionally,
you
can
place
a
slice
of
bocconcini
or
mozzarella
cheese
on
top
of
the
tomato,
if
desired.
RANCH
TILAPIA
1
5
oz.
tilapia
fillet
1/2
cup
Ranch
dressing
1
cup
Parmesan
cheese
2
cups
corn
flakes
1
pinch
salt
1
pinch
black
pepper
Preheat
oven
at
350
degrees.
Grind
up
corn
flakes
into
crumbs.
Mix
Parmesan
cheese,
salt,
pepper
in
with
the
corn
flake
crumbs.
Baste
the
tilapia
fillet
(both
sides)
with
Ranch
dressing.
Coat
fish
with
the
crumb
mix
evenly.
Bake
for
17
mins.
