SUCCESS Spawning up the Discus Fish, This Is How

Tafshare.com - Discus fish is a type of fish that when spawning is always with their children to a certain size. Discus fish larvae will always follow the mother when they have just hatched. Discus fish is an introduced ornamental fish species originally import from the Amazon river (Brazil) and is now widely in Indonesia. Discus name is caused by a body shape similar to the disk plate that stands upright.

The body shape of this fish is flat round with the basic color of reddish brown, choppy lines and varigated irregular from the forehead to the side of the abdomen. Red discus fish eyes and body diameter of 15 cm. Discus fish are known to be disruptive, tend to be alone or clustered with similar fish.

The most fundamental thing in cultivation is coosing good and quality breeders. How to cultivate this fish since shildhood. Because after the age of 12-18 months, this fish will choose their own partner. This discus fish pair that we take and moved for further spawning.

Preparation of Spawning Containers
Aquarium: 75x35x35
Temperature: 28-30c
Number of eggs: 50-350 grain
pH: 5-6,5
- Water filled with a depth of 25 cm and then input the leavess ketapang as much as 1 sheet and 1 tablespoon of non iodine salt
- Let stand for days

How to Choose a Discus Fish Parent?
- Discus fish can breed at an optimal pH of 6,2 or slightly acid

- Discus fish are fish that choose their own partner

- Place some discus fish in one aquarium so that the breed can choose their own partner, then look at some discus fish that always swim together

- Separate discus fish pairs from other fish

- For one aquarium you should place 4 discus fish with a ratio of 1:1

How to Spawn Discus Fish?
- Insert the discus master pairs into the aquarium

- Do not forget to give Aerasi (filter)

- Place a paralon or pot in the aquarium to paste the egg

- A good egg will hatch after 60 hours

- After the egg hatches, hold the larvae then move to a safe and clean place with the mother. The larval shelter can use a sieve or bottle

- After 3-4 days the discus larvae can already swim and begin to cling to the mother while sucking the mucus that is on the body of the mother as the main food

- Discus after a week old can only be fed with water lice or artemia larvae

How to Enlarge Discus Fish?
- Transfer the old one-month discus pupil from its mother to a 100x50x35 cm aquarium. After the big move the disc into te larger aquarium again

- In order to look good, the discus sould be placed in standard aquarium (50x50x40cm parent and till disk 50x100x35

- To keep the discus alive, providenatural food such as daphnia, silk worms, super worms, mosquito larvae and the like. Discus also likes to consume artificial feed mixture of heart, liver, meat, srimp, fish and vegetables.

Preferably, discus fish cultivation is done in groups. This group cultivation is more effective and efficient. Group cultivation also facilitates the marketing and distribution process

Healthy Fish with Azolla, this Technique of Cultivation

Tafshare.com - Azolla is a plant of ferns that live in the water, these plants can live on the surface of the water. This plant is symbiotic with Anabaena azollae, blue-green algae (cyanobacteria) and azolla as its host or home to algae. Algae live under the cavity of azolla leaves.

Azolla as several species, among others Azolla caroliniana, A. filiculoides, A. mexicana, A. microphylla, A. nilotica, A. pinnata var. pinnata, A. pinnata var. imbricata, A. rubra. Azolla is very rich in protein, essential amino acids, vitamins (vitamins A, vitamin B12 and beta carotene), minerals such as calsium, phosphorus, potassium, iron and magenisum. Based on its dry weight, azolla contains 25-35% protein, 10-15% minerals and 7-10% amino acids, bioactive compounds and biopolymers.
READ: SUCCESS Spawning up the Discus Fish, This Is How
Azolla fat and carbohydrate content is very low. Its nutritional composition makes Azolla very efficient and effective as a fish and livestock feed. Fish and livestock can easily digest it, because of its high protein content and low lignin.

Aquaculture Azolla microphylla:
Preparation of Azolla Farming Containers
-Shallow ponds with soil, cement or tarpaulins, the more widely the number of Azollas that can be cultivated
- Fill the manure with the ground ratio of 50:50 as thick as 5cm
-Add SP36 fertilizer with a dose of 6.5 g/m
-Fill the pool with water with a height of about 3cm

Seeding of Azolla Seeds:
-Sprinkle azolla seeds with a dose of 50-70 g/m2
-Leave for 2 weeks or more by keeping the water level
-For optimal Azolla growth, apply BIOCATFISH probiotics 50ml/m2 regularly every 2 days
-Wait for 2 weeks or more by keeping the water level
-Harvest when azolla is visible accumulate and thicken to cover the surface of the pond. Azolla can be harvested 1-2 weeks or as needed

Very easy is not it?, now you can try it at home and congratulations to experiment

Nature of Fishery Resources

Tafshare.com -Indonesia is a country with the largest expanse of sea in the world. The entire areas of the Indonesian Ocean to the exclusive economic zone of Indonesia of 5.8 million km2 is divided into 3 parts. First is the width of the marine waters of Indonesia is amount 3.1 million km2. This region consists of the waters of the archipelago of 2.800.000 km2 and territorial sea waters of 3000.000 km2. Then the waters of exclusive economic zone Indonesia of 2.100.000 km2. This great comparative advantage should be a basic capital in Indonesia's development.

The vast waters of Indonesia save a lot of natural resources, especially fisheries and the like. So that the right, good and optimal utilization should be the biggest contributor to the national development and become the foundation of state development. However, because the nature of fishery resources, especially the sea makes the utilization and management of fish resources management become quite difficult and complicated. The nature of fishery resources is Renewable Resource, Open Access, and Common Property.

1. Renewable Resource
READ: Healthy Fish with Azolla, this Technique of Cultivation
Fisheries Resource is a resource that is Renewable Resource, which is a natural resource that keeps renewing naturally. Although renewable natural resources there is still a certain corridor in its utilization. Limitations of fishing are already written in the law. There are certain does in the Allowed Catch. The Allowed Catch regulation on fishing will be sustainable and restore its population as usual. This is so that fish resources continue to be maintained and can continue to be utilized every year by the people of Indonesia. however, despite many regulations, the management and control of fishery resources are quite difficult. In addition to the observation constraints of the number of fish, the number of spot utilization becomes a major public relations to keep watch over and keep the fishery resources in order to avoid Over Fishing.

2. Open Access
The next trait is open access. Open access is an exploit that is open to the public and everyone can access it freely. This principle is always a conflict of utilization of fishery resources, especially capture fisheries. Therefore, clear regulation close supervision and monitoring of intense sea boundaries will greatly help deal with illegal fishing in some locations in Indonesia waters. Not a few elements of illegal fishing perpetrators who make the principle as an excuse. However, despite strict regulations and actions being taken, maritime boundary control remains difficult to do with certainty. Who can provide certainty of water boundaries with other water?. It is also a big homework that must be continuously improved so that there is no misunderstanding between the utilization of fish resources.
3. Common Property
The last property is the common property. This nature is the culprit of almost all problems of fishery resource utilization. Common property simply means to belong together. This is what makes the utilization of fishery resources can be though by all actors of fisheries. Common property and open access are often confused or even equated. Yet these two traits are very different.
The nature of the common property often raises many problems because every fisherman thinks this resource is free to be utilized by anyone. In addition to these assumptions, some even claim that this resource belongs to me. So everyone feels to have this resource. Yet because it belongs together, everyone should not have it. Because everyone can use it. No one can claim that tuna in Indonesia is a fish belonging to Indonesia, and so the fish in every water (sea) of a country no one can claim that the fish is the property of that country. Why is that? readers friends can definitely summarize the reason.

That is the nature of fisheries, especially marine fisheries (catch). Of these properties, many are also quite a lot of adverse and disadvantaged. For example, Natuna. Until now the conflict has not ended, how should we respond to this problem?.

Sea Zone Distribution by Depth

Tafshare.com - One of the visible water that exists on the surface of the earth is the sea. The sea is a vast water, has salty water and has benefits in the ups and downs. The sea usually has a watercolor that looks blue. On the map, we can see this sea which is depicted in light blue. The vast sea is called the ocean.

According to the depth of the sea is divided into four kinds. Actually, the sea according to its depth is the parts or arena of the sea according to the measured according to the depth of each. The four kinds of sea-based on its depth will be explained as follows:

Litoral Line
The first type of ocean based on its depth is a part of the ocean located on the coast, which lies between tidal rises and also tidal sea.

The Neritic Zone

In addition to the litoral zone, there is also neritic zone. The neritic zone is a shallow sea section with a depth of only about 200 meters.

The Batial Zone
In addition to the litoral zone and the neritic zone, there is a batial zone next. Batial zone is an area that is in the deep sea with a depth ranging from 200 to 2000 meters.

Abisal Zone
In addition to the three zones previously described, then there is the abisal zone. Of all the zones already described, the abisal zone is found in a very deep sea that has a depth of more than 2000 meters.

That is some kind of sea or parts of the sea that is divided according to the depth of the sea itself.

This System Can Boost Your Fish Harvest 100-fold: RAS

Source: www.afrid-fransisco.id
Tafshare.com - Ministry of Marine Affairs and Fisheries or usually we call them KKP in Indonesian developed intensive hatchery system recirculating aquaculture system (RAS) as an effort to improve fish farming productivity. Director General of Aquaculture, Slamet Soebjakti, said RAS is an intensive fish cultivation system by using infrastructure that allows continuous water utilization (water recirculation).
READ: Nature of Fishery Resources
Such as filter physics, biological filter, UV, oxygen generator to control and stabilize the environmental condition of the fish, reduce the amount of water use and increase the survival rate of fish. He said, the basic principle of RAS is to utilize water maintenance media repeatedly by controlling some water quality indicators to stay in top condition.

The advantage of RAS system when compared withthe  conventional system, which is able to produce a much higher productivity, where the density of tilapia spreading can be pushed up reach 5000 tail/m³. While solid stocking in the conventional system only reach 50 tail/m². That is, with the implementation of this RAS system productivity can be boosted up to 100 times compared with conventional system.

Another advantage, according to slamet that cultivation with this system greatly save water use, and can be done on a limited area. In addition, the use of RAS technology will provide an outlet for cultivation fishing challenges such as climate change and environmental quality.
READ: Sea Zone Distribution by Depth
On the other hand, an effort to increase productivity will be faced with global challenges of climate change and the environmental. Therefore, there needs to be intervention through the application of adaptive technological innovation. The development of cultivation technology increasingly dynamic and must be transmitted massively to the community.

Understanding the Sea and Its Grouping

Private document. @Uluwatu, Bali
Tafshare.com -  One of the visible waters that exist on the surface of the earth is the sea. Yes, the sea must have been heard often, or even we often visit the sea to play games, research or even work. This sea is a vast water, has salty water and has tidal benefits in its water. The sea usually has a watercolor that looks blue. On the map, we can see this sea which is depicted in light blue. The vast sea is called the ocean.
READ: This System Can Boost Your Fish Harvest 100-fold: RAS
Understanding this sea is a collection of salt water that the number is a very large or extensive and directly related to the ocean. In addition to dealing with the ocean, the sea is also associated with rivers, where the sea is where the reverbed rivers that exist on the surface of the earth. The meeting place of the river with the sea is called the river mouth. At the mouth of this river, there is usually a meeting of salt water with fresh water, this is because the river has a taste of fresh water while the sea has salty water.
READ: Sea Zone Distribution by Depth
The sea is a vast saltwater. The sea is turned out to not only have one kind of course. The sea turned out to consists of several kinds. Various kinds of this sea can be seen according to some characteristics. In general, the seas are grouped according to five classifications according to their location, by the depth, by extent, by process of occurrence and by their relief.

The Shape of The Earth's Surface Waters

Tafshare.com - The surface of the consists of land and water. There are parts of this earth that towering and there is also a closed body of water. Here are the various forms of the surface of the earth covered by water bodies:

Shallow or Continent Exposure
The shape of the Earth's Surface in the form of waters, the first is the continuance or exposure of the continent. What is meant by the continental shelf or exposure is the vast sea level and also has a depth of fewer than 200 meters. The shape of the Earth's surface in the form of waters this one is an extension of the mainland island and the continent. Due to its small depth, the area of this base is very fitting for just swimming or snorkeling. In Indonesia itself we can see this kind of surface, namely the Sunda she'll and Sahul shallow.

Marine back
The of the waters in the back of the sea. Sea back is a sea surface that resembles a hill. Hill itself is a part that stands out higher than the other. So that the sea back is a hill that is in the sea. Yet this backwater does not come to the surface of the sea, and we cannot see it from the mainland.

Sea Threshold
In addition to the best and also the back of the sea, then there is the sea threshold. The sea threshold is part of the earth surface form of water. What is meant by the sea threshold is shallow sea surface and also as a separator of two deep seas. There is a world-famous sea threshold, the Sulu sea threshold and also the Gibraltar sea threshold.

Sea Mountain
After we talk about the backs of the sea and also the threshold of the sea, there is still another form of the earth's surface in the form of waters, the sea. Just like the back of the sea, that this sea mountain resembles the mountain that is on the mainland, but it lies beneath the sea. Just like the mountains that exist in the mainland this sea volcano is active and some are inactive. Marine volcano is active, meaning that this sea mountain can experience eruption at any time. The active volcano is also present in Indonesia. The active volcano in Indonesia is Anak Krakatau in the Sunda Strait, with separates between java island and Sumatera island. Formerly mount Krakatau which also exist in the Sunda strait experience eruption or eruption and has resulted in a lot of damage that occurred. Mount Krakatau when erupted has caused has a tsunami that occurred in the ocean region.

Sea Trench
The marine trench is also a relief on the mainland but it lies in the ocean. If we are in the plains know the name of the cliff, then the ocean we know the trench of the sea. The sea trough resembles a chasm that is in the sea. Just like the abyss of the mainland, The sea trough is a very deep hole and flanked by narrow and steep walls. The sea trough extends downward and resembles the letter. In addition, ion the marine through is also the deepest point on earth. The lowest point on earth is in the ocean though. There are so many Throughs in this world, and the deepest through and the lowest point on earth is located in the Mariana Trench in the Pacific ocean.

Sea hole
Sea ducts are also the shape of the earth's surface in the form of waters. What is meant by the bottom of the sea is the sea surface that has a shape as a large basin and also wide. This sea or popular hole also has a very deep depth. This sea or niche also resembles one of the earth surface reliefs on the land which we know as valleys. So what is meant by the bottom of the sea is the valley located in the sea.

Coral Island
The shape of the earth's surface in the form of water which is the coral islands. Coral island is a sea shaped. The shape that is shaped like an island consisting of rocks and corals that are very numerous. These rocks are formed over dead animals and piled into one. Because the bodies of these animals are numerous, due to the role of a very long time eventually the animal's body hardened and turned into a rock.

The composition of the earth's surface

Tafshare.com - The surface of the earth is basically divided into two different forms. The surface of the earth in the form of land and water. This we can see from the shape of the color of the earth's surface, which consists of blue and white. The dominant blue color on the surface of the earth depicts the water and the rest is the land. Form water can manifold, there is sea, the ocean, lakes, rivers, and puddles other. In addition to the waters of some form of the waters of as a solid the snow and chunk of ice for example, as in the subtropical and pole. Forms of mainland also vary. From this surface of the earth, we will peel it deeper so we better know what exactly the components of the earth surface.
The land of the earth consists of the island. The adjacent islands are grouped into the named continents. They are at least 6 continents on this earth that are the continents of Asia, Afrika, America, Europe, Australia, and Antarctica. Of the six continents, Antarctica is still not basic human habitation because it only consists of ice and has a  very cold temperature. 
Water covers most of the earth surface. Because this is the earth to be a suitable place for living things. Although human lives on land, the fact is that more waters than land. As for the forms of the earth's surface is divided into several forms of the ocean, strait, trough, lake, river, and other puddles. Besides that, there are also poles that water in solids forms.
Because this different place is a living being that leaves it to have different circumstances ranging from it form through one species, its way of life, and it's environmental conditions.

Preface from Tafshare.com

Tafshare.com - Hallo Tafshare's best friend. Greetings familiar with Tafshare. Tafshare.com is a web written with the intention to introduce fisheries and food in general to the public. His hope with these writings is able to help various elements to raise public awareness of the importance of food for human beings. It is also able to provide a little science in the utilization of food and all related to it.
READ: The composition of the earth's surface
Writing on the web will focus on food issues and its use is also more specifically in the field of fisheries. But not does mean there is no writing in other fields. Writing on the web hope this can continue to be updated and able to educate the reader as well.

Criticism as well as suggestions we also need to improve the usefulness of the readers.
Best regards, Tafshare.com

Apa itu Danau, Sifat karakteristik dan Ekosistem Danau?

Danau adalah ekosistem air tawar yang mudah kita jumpai selain sungai. Danau mempunyai kegunaan yang sangat penting bagi makhluk hidup. Hal ini berkaitan dengan danau sebagai habitat berbagai organisme air dan sebagai sumber kehidupan bagi masyarakat sekitar. Sekarang ini danau telah dimanfaatkan oleh masyarakat, bukan hanya untuk sumber air saja melainkan juga kegiatan perikanan dan wisata. Selain itu juga danau dijadikan tempat olahraga memancing. Karena itu, melihat pentingnya danau maka ekosistem danau dan kualitas air perlu dijaga agar dapat dimanfaatkan secara maksimal. Berikut ialah penjelasan para ahli mengenai definisi danau dan sifat karakteristiknya
Baca: Komoditas Penting Perikanan Tangkap Konsumsi
Danau adalah cekungan yang air tergenang secara alami. Danau menampung air yang berasal dari hujan, mata air, dan air sungai. Ada juga danau yang dibuat oleh manusia dengan cara membendung aliran sungai. Danau yang dibendung ini biasa disebut waduk atau bendungan (Anggraini, 2007).

Air danau bisanya bersifat jernih dan tumbuhan airterbatas hanya pada daerah pinggir. Danau dicirikan dengan arus yang sangat lambat (0,001 – 0,01 m/s) atau tidak ada arus sama sekali. Oleh karena itu waktu tinggal (residence time) air dapat berlangsung lama (Effendi, 2003).
Baca: Mengenal Istilah - Istilah dalam Perikanan
Ekosistem danau dapat dibedakan menjadi beberapa bagian yaitu benthal, litorial dan profundal (Barus, 2004). Morfologi dari kolam danau sangat penting pengaruhnya dalam semua hal yang berhubungan dengan fisika, kimia dan biologi. Bentuk dan ukuran sebuah danau akan mempengaruhi karakteristiknya (Wetzel, 1991). Zonase perairan tergenang baik danau maupun perairan lentik dibagi menjadi dua yaitu zonase bentos atau dasar dan zonase kolam air. Berdasarkan kesuburannya perairan lentik (danau) diklasifikasikan menjadi 5 yaitu oligotrofik, mesotrofik, eutrofik, hiper-eutrofik dan distrofik (Cole, 1988).

Beberapa penjelasan lain yang belum tersampaikan akan kami sampaikan pada artikel selanjutnya ya. Terima kasih

Daftar Pustaka
Anggraini, Kiki. 2007. Mengenal Ekosistem Perairan. Grasindo. Jakarta.
Barus, T.A. 2004. Pengantar Limnologi. Universitas Sumatera Utara. Medan.
Cole, G.A. 1998. Textbook of Limnolgy 3th. Waveland Press Inc. Illinos. USA.
Effendi, Hefni. 2003. Telaah Kualitas Air Bagi Pengelolaan Sumber Daya dan Lingkungan Perairan. Kanisius. Yogyakarta
Wetzel, R.G. dan Likens, G.E. 1991. Limnological Analyses. Springer-rerlag. New York.