A. Introduction to Type
Initially, the fish are lazy cork pests that disturb the peace pet fish in the pond, just like an eel. His name is in accordance with the habits of his life. This fish is almost not moving so lazy. Therefore, these fish should be feed live to react. Cork lazy fish, also known as sand goby.
Sand goby has a scaly type ctenoid. That is, the form of scales kecilkecil and blanketed all over his body. At the head of the scales, there is a muzzle, cheeks, and operculum. Operculum is more section scales
large compared to the other. Anal fin shorter than second dorsal fin. This fish is easily distinguished from other fish because it has a blackish brown body color. On the back dark green, while the lighter color of the belly. The head has a pink mark.
Goby can grow up to 45 cm. Her body was elliptical. His mouth can open wide and ready to eat prey that pass in front of him. Shaped tail fin rounded (rounded) body skin decorated with mottled brown. Type of cork lazy or sand goby is known of them as follows.
1) Broadhead sleeper or Dorminator lotifrans Fish are scattered in the Pacific Islands and Central America and southern Mexico, both in saltwater and freshwater. Body length can reach up to 25 cm. Broadhead sleeper like to eat small fish.
2) Spotted Goby or Dorminator maculatus This fish can grow to 25 cm. Spotted Goby scattered in the Pacific Islands and Central America, either at sea or in brackish water.
3) Morgunda-morgunda or purple-striped gudgeon Fish belonging to this ferocious freshwater contained in Northern and Central Australia. Body length can reach 20 cm.
B. Habits of Life in Nature
Bering cork fish seed looked like a group of cere fish (Lebistes reticulates) in the pool. Lazy Cork comes from Borneo, Sumatra, Malaysia, and Thailand. These fish live in rivers, swamps with a depth of 40 cm, and like the shallow waters.
This goby fish tend to prefer the dark, muddy, fast-flowing calm, or the rocks to hide. In Indonesia, this fish is found in Palembang, Muara Kompeh, Mount Sahilan, Jambi, Koto Lake, River Russu, Bua-bua, Banjarmasin, Sintang, Montrado, Stone Pangal, Smitau, Lake boranes, Pontianak, Kapuas River, Sarawak and Ternate, Cisadane River, Solo, and several other large rivers.
1. Eating habits
In nature, goby eating feed that were located very near future. With its mouth very wide, not an obstacle for the goby to satiate his stomach. Betutu including carnivorous group. The preferred type of feed is small fish, worms, or other organisms, provided still alive. This fish can eat this food in large quantities every day.
2. Breeding Habits
In nature, betutu will marry in the rainy season in place of clean sand. This fish mating in pairs. Eggs will dietakkan at the base or attached to the substrate, a suburb of stone, wood or principal roots of the net. Eggs will look like fog or a very soft cotton and smooth that attach to the substrate.
C. Selecting Parent
Parent goby is generally collected from the wild because it needs a long time and very much feed to produce the parent in the pool. Parent-parent is generally collected in the sand goby and selected adults who have a healthy body. Male parent can be distinguished from the female parent by looking at morphological characteristics as follows. Main characteristics of quality
| FEMALE | MALE | |
| His body is colored black gelap.Bercak more. Urogenital papilla elongated shape of the bulge is greater. rounded, red color just before spawning. Its size is smaller than the size is smaller than the males at the age of same | His body is colored black terang.Bercak more sedikit.Papila orogenital triangular, compressed, and the same age kecil.Pada larger than female |
D. Spawning in Ponds
Initially, the goby is a wild fish whose presence is not desired in the pool maintenance because it likes to prey fish that are kept in it. Therefore, if you want goby breeding in the pond then the preparation must be done so that no other fish into the pond and disrupt the process of spawning sand goby.
1. Pool Construction
Area of spawning ponds varied between 200 m2, depending on availability of land. Rectangular-shaped pool with the location of the door entry and disposal diagonally opposite. The goal is that pool water can be obtained from the direct channel and disposal can be smoothly. Discharge of pool water at least 25 liters / minute. Substitution of water which will kotinyu positive effect on the spawning process. If the land is narrow, can be made bathtub-sized cement 2 mx 1 mx 1 m for the parent goby spawning in pairs. However, if you want a few pairs breeding in a limited area can be made pool wall measuring 4 m X 2 MXI M.
2. Preparation Pool Parent prepared first. For spawning pond area of 200 m2, can be prepared parent average size 300 g of 35-40 pairs. While for a small pond, with an area of 8 m2, can be incorporated parent as much as 3-4 pairs. Before the stem is inserted, spawning pool is equipped with a triangular spawning nest made of asbestos. Segitigiga 30 cm length are tied with wire and buoys were given to facilitate know its existence. Parent entered into a spawning pool after pool filled with water as high as 40-45 cm. During the spawning process, you should obtain replacement pool water continuously. The process of continuously running water has proved able to stimulate almost every type of fish spawning naturally.
3. Spawning
Goby fish spawning behavior includes 5 steps, which form a regional power, making a nest spawning, mating, spawning and lay their eggs in the nest, and guard their eggs. Spawning usually occurs at night, but not rare at noon betutu also spawn. This fish will be married at the nest spawning triangle. Furthermore, eggs produced will be placed into a spawning nest box is triangular.
E. Hatching Egg and Seed Treatment
Goby fish egg-shaped oval, transparent. The size is very small, only about 0.83 mm in diameter. Eggs are attached to the walls of the nest. After contact with water for 10-15 minutes, the membrane keeps vitelinya will inflate and the length of eggs increased by approximately 50% up to 1.3 mm-sized eggs.
Hatching eggs done in the aquarium by raising the spawning nests that already contain eggs. A spawning nests could be occupied by a pair of parent, but can also be occupied some breeding. Capacity should be at least 60 liter aquarium. To ensure the hatching process, given the rather strong aeration, and poured a few drops
Malachytgreen or Methylene blue to prevent fungus (fungi). Eggs are attacked by fungus will appear white furry and should immediately disifon so as not to infect other eggs. The number of eggs in each nest ranged 20000-30000 grains. Eggs do not hatch at the same time. Typically, the incubation lasts 2-4 days. After the eggs hatch, reduced power aerator. The percentage of eggs that hatched between 80-90%.
F. Separating
Separating intended to keep newly hatched larvae and eggs was up yellow (yolk sack) into the pool to obtain sejari-sized fish (fingerlings). Germination is usually divided into 2 parts, the nursery I and II nursery. Separating I do in the tub or pool are smaller, measuring 5 mx 2 m with a depth of 1 m. This pool is fitted hapa with eyes the size of 500 microns (0.5 mm) in size 100 cm x 75 cm and 60 cm high.
Number of hapa mounted depending seeds to be stocked. Stocking density in hapa at the nursery I, which 30 000 larvae / m 2 or 3o animals per liter of water. So, into the tub can be accommodated as much 100000-150000 larvae, the results of 3-5 nests fruit, with water depth of 50 cm. Old maintenance in the nursery I was of 2 months. With food supplied from outside, will produce seed size of 1-2 cm with a survival rate reached 20%.
For the nursery 11, needed a pool of 50 m2 area with size of 5 mx 10 m and a depth of 0.7 meter pool. Ponds fertilized with chicken manure as much as 0.5 to 1.5 kg / m2, depending on the fertility of the pond. Old maintenance in nursery II, that is 4 months and will produce seed betutu 10 cm (30-50 g) with the level of life can reach 100%.
G. Enlargement
Enlargement is intended to produce sized goby consumption. The pool area of 200-600 m2 required. Swimming attempted to obtain water pool barn with embankment construction of the ground with the first confirmed no leaks. Ideally, the pool
goby with a walled embankment. In the swimming placed several hideouts of old tires or coconut dawn because betutu environment requires a rather dim.
Ponds fertilized with chicken manure in advance with a dose of 0.5-1.5 kg/m2. Swimming irrigated with water that has been through a sieve. Furthermore, the size of sown seed. The stocking density depends on the seed sown. For seeds sown size of 100 g to 20 ekor/m2, while the size of 175 g can be sown as much as 8 ekor/m2. Within 5 months, weighing 100 g of seeds that can grow to 250 g / head, while the size of 175 g to achieve weight of 400 g / fish for 6 months.
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