Fingering Production in Japan Interim Report Sep. 2001-Aug. 2002
Reported by Aqua Culture Network

1. Red Sea Bream
The total production of Tatego and Akigo produced during last Sep.-Nov. is 110% to the year before last (9 million of fingerlings were shipped). But the situation underwent a sudden change.
  1. ”The fingerlings of Company “A” fell VNN and they stopped producing!”
  2. “The fingerlings in the sea around Sukumo fell Flexibacteriosis and survival rate is less than 50%.
  3. The fingerlings in some hatcheries are deformed and they gave up shipping.
  4. The fingerlings died completely although the hatching rate of their fertilized eggs was comparatively high.
In our survey the reports were practically true, and it was expected that the larval fishes should be in short supply this spring. As a result there were not many product and shipment Jan.-Apr. The hatcheries tried to improve this situation by increasing hatching rounds, thorough prevention of plagues, and severe selection for the parent fishes. As a result about 55million fingerlings were shipped during Jan.-Apr., and about 65 million of fingerings (decreased by 15 million from last year) were shipped during this season. However, Some hatcheries still have many fingerlings in stock and must spend this summer at the hatcheries’ own risk because of delayed shipping. So we are anxious about the damages caused by typhoon and Irido disease.

There were two ranges of fingering’s size, 7-8cm and 11-12cm. (Tatego, and Akigo and Harugo were shipped in turns). The unit prices of fingerings were JPY7-10cm.

We are anxious about the staying low prices of adult fishes and we are rather afraid that Red Sea Bream might become one of the most difficult fish species to culture like Flatfish due to the VNN (We are not sure it is Red Sea Bream VNN) and deformity problems in future.

*Tatego:The fingerings hatched before Bon Festival (Aug. 15)and sold within the year.
*Akigo:The fingerings hatched after Bon Festival and sold within the year

14million of fingerings for farming were produced in total by 32 private and 2 public hatcheries and the production had fallen by 1.1milllion from last year. The supply of fertilized eggs started in the middle of August in Western Japan, May-July in Eastern Japanese, and they are available all through a year in Korea. Some hatcheries in which ground marine water (18℃) was available produced the fingerings even in summer and shipped the 6cm up size of flies in September.

Kinki University and Maruasuisann started producing the fingerings for earlier shipping and followed by Nagasakisyubyou and Kansaibussan, but they seemed to have had a hard time to sell them. The prices were JPY95-50/fly (6cm up size)

We expected that the prices of adult fishes should rise because of World Cup special procurements and the decreased import but actually the prices were JPY1,200-1,500.-/F even the 1kg size of fishes

The drop in adult puffer prices throughout the season we saw the year before last could be avoided because Korean imported the smaller size of adult puffers produced in China, and the prices started going up with the shortage of the domestically farmed fishes hatched in China. On the other hand too many fingerings for earlier shipping were produced because of the information that China has few fingerings in stock, and they have been overproduced since last June. 

15 million of fingerings were shipped (produced by 32 private and 2 public hatcheries). Nagasakisyubyou and Oshimasuisansyubyou shipped 3.6 million of fingerings by the beginning of July, which accounted for 25% of the total shipment. But some hatcheries still have the flies in stock even now.

The prices of hormone (6cm up) shipped in March was JPY115.-/fly(The highest price). The price of wild one shipped in June (6cm up) was JPY95.-/fly.

4.Striped Jack
The total production of the fingerlings for farming was 14million (produced by 4 private and 2 public hatcheries) and decreased by 1.2milllion from last year. The main reason for the decrease was that the biggest producer “Marine Palace” gave up producing after 2nd round because of VNN. They sold their fingerings after inoculating them with Irido Virus Vaccine permitted to use this year, but they expect that fish farmers should inoculate it as the prices become much higher because the fingerlings should grow up to more than 8cm to be inoculated and it costs more charges.

5.Sweet fish
The market prices of sweet fishes in July were JPY1,300.- (Regular one) and JPY1,500.- (the fish which appears like wild one and is shipped as wild one is) almost all fingerlings of Biwako origin has already been shipped out ,and the artificial fingerlings and the fingerings of seawater origin are being shipped now.

The prices mentioned above are satisfying to the hatcheries, but for hatcheries rearing the artificial flies it has a strong influence on their profits to reduce the number of dead or underdeveloped fingerlings caused by “Boke” and “Cytophaga psychrophira” which can be seen throughout the process of culturing the fingerlings. The hatcheries are eager for tougher fingerlings because especially these disease can be seen more in young fingerings, so regarding the eggs of fingerings for earlier shipping harvested Aug.-Sep. they prefer the tougher fingerlings to the fingerings available earlier.

Since last year there have been few supply of the artificial fingerlings and so the prices of fingerling are expected to be the same as last year. Furthermore, the frozen fishes are also expected to be in short supply so the prices of adult sweet fish are expected to be comparatively high. So for the fingerlings supplier “high quality and stable supply” and for the fish farmers “Reconsidering the producing method and reducing the dying rate” will remain to be a task in the future.