What are biology characteristics of Tra and Basa fish?

Pangasius 26 Q&A 00:00 01/01/1900

 

Pangasius hypophthalmus/Pangasianodon hypophthalmus  - Tra

Tra is a fish with long body, grey black back, little white belly, big­ mouth and two pairs of barbells. The raising period varies from 6 to 8 months to reach the weight of 0,8 - 1,3 kg/fish. Tra fish mainly live in fresh water but also in blackish water (with salinity percent of 7 - 10), can bear in alum water (with pH level > 5), in hot tempreture up to 39oC but be easily died at temperature below 15oC. The volume of red corpuscles in Tra fish are much more than other fish. As the fish has an accessory respiratory organ and can also breathe with air bladder and skin, they can bear in the water lacking dissolved oxygen. The oxygen consumption and activity level of Tra fish is three times lower that the ones of a silver barb. 

Pangasius bocourti - Basa

Basa is also a fish with long body. The standard length of the body is equivalent to 2.5 times of the height of the body. It has a short, slight round and flat head, a wide forehead and a small mouth of which the width is less than 10% of the standard length and which is lightly askew the snout. Its teeth of the lower jaw are big and wide and can be seen when the mouth is close. It has two pair of barbells, the length of the pair at upper jaw is equal to the one of the head, and the whiskers are long to or over the end of pectoral fin. It has big eyes, belly and spleen, the back side of the body is flat, the back and the head have the grey green colour, and the belly has the silver-white colour. The height of the tail-end is more than 7% of the standard length of the body. The raising period varied from 10 to 13 months to reach commercial weight of 1 - 1.5 kg/fish.

As Basa fish has no accessory respiratory organ and requires an oxygen level higher than the one of Tra fish, it can poorly bear in water with low dissolved oxygen level. Basa mainly live in freshwater, can lightly bear in brackish water and in alum water with pH level > 5,5. The supported temperature is from 18 - 40oC and the minimum oxygen level is about 1,1 mg/litre. In general, Basa fish can not support in severe environmental conditions as much as Tra fish. Therefore, they are mainly raised in floating cage.

Bạn đang đọc bài viết What are biology characteristics of Tra and Basa fish? tại chuyên mục Pangasius 26 Q&A của Hiệp hội VASEP

TIN MỚI CẬP NHẬT

The US has a new president: what impact will it have on Vietnam’s pangasius export?

 |  08:55 21/11/2024

(seafood.vasep .com.vn) The return of Donald Trump to the White House for a second term will bring significant impacts on Vietnam, particularly its pangasius export sector. Trump's economic policies, such as raising import tariffs, reducing corporate income taxes, and attracting foreign direct investment (FDI) back to the US, are expected to directly influence various industries in Vietnam.

CEPA opens new doors for Vietnamese shrimp exports to the UAE

 |  08:54 19/11/2024

(seafood.vasep.com.vn) The UAE ranked 16th among importers of Vietnamese shrimp from 2018 to 2022, accounting for approximately 0.5% of Vietnam's total shrimp export value. Annually, Vietnam exported around US$20 million worth of shrimp to this market.

Sao Ta Foods’ October sales reach $23.25 million

 |  12:26 15/11/2024

(seafood.vasep.com.vn) The company also announced that its farms are well-prepared and will begin stocking in mid-November when the weather conditions are favorable.

Ecological shrimp farming under mangrove forests in Ca Mau yields high efficiency

 |  08:42 13/11/2024

(seafood.vasep.com.vn) To maximize natural advantages and increase the value of local aquatic products, Ca Mau province is promoting the ecological shrimp farming model under mangrove forests. This model not only brings high profits to people thanks to businesses committing to purchasing products at prices 10-20% higher than the market price but also aims for sustainable development and environmental friendliness.

Vietnam’s tuna industry seizes “golden opportunity” to boost exports to the UAE

 |  09:05 11/11/2024

(seafood.vasep.com.vn) The Comprehensive Economic Partnership Agreement (CEPA) between Vietnam and the United Arab Emirates (UAE) was signed after just over a year of negotiations. With high demand for premium seafood in the UAE, particularly for shrimp and tuna products, Vietnam’s tuna industry is expected to gain increased export opportunities and higher product value thanks to the preferential terms of the CEPA.

Vietnam seafood exports in October 2024 return to $1 billion mark

 |  11:00 07/11/2024

(seafood.vasep.com.vn) In October 2024, seafood exports from Vietnam are estimated to exceed $1 billion, marking a 28% increase compared to the same period last year. This achievement signifies the first return to the $1 billion milestone in 27 months, since June 2022, providing a significant boost for Vietnamese seafood enterprises.

Dong Thap Pangasius festival scheduled on November 16-17, 2024

 |  11:20 06/11/2024

(seafood.vasep.com.vn) Under the theme "Dong Thap Pangasius: Green Journey - Green Value," the Dong Thap Pangasius Festival 2024 will take place over two days, November 16th and 17th, at Vo Nguyen Giap Square in Hong Ngu City.

Kien Giang Province: Promoting biosafety rice-shrimp production

 |  09:02 05/11/2024

(seafood.vasep.com.vn) The Department of Agriculture and Rural Development of Kien Giang has announced a plan to stabilize the biosafety rice-shrimp production area at 117,340 hectares by 2030.

Ca Mau province: Shrimp output reaches 208,495 tons as of October 17

 |  08:44 04/11/2024

(seafood.vasep.com.vn) According to the Department of Fisheries in Ca Mau, the total aquatic product output in the region is estimated at 536,140 tons as of October 17, achieving 82.23% of the annual plan and marking a 1.74% increase compared to the same period last year. Within this total, shrimp production stands at 208,495 tons, reaching 82.41% of the planned target and showing a 2.23% increase year-over-year.

Pangasius exports to Iraq reach 3-year high

 |  09:14 01/11/2024

(seafood.vasep.com.vn) According to data from Vietnam Customs, pangasius exports to Iraq have surged significantly in the first nine months of 2024, marking the highest levels seen in three years. This upward trend has positioned Iraq as a key market for Vietnamese pangasius, even surpassing Iran, traditionally regarded as a gateway for trade between Vietnam and the Middle East.

VASEP - HIỆP HỘI CHẾ BIẾN VÀ XUẤT KHẨU THỦY SẢN VIỆT NAM

Chịu trách nhiệm: Ông Nguyễn Hoài Nam - Phó Tổng thư ký Hiệp hội

Đơn vị vận hành trang tin điện tử: Trung tâm VASEP.PRO

Trưởng Ban Biên tập: Bà Phùng Thị Kim Thu

Giấy phép hoạt động Trang thông tin điện tử tổng hợp số 138/GP-TTĐT, ngày 01/10/2013 của Bộ Thông tin và Truyền thông

Tel: (+84 24) 3.7715055 – (ext.203); email: kimthu@vasep.com.vn

Trụ sở: Số 7 đường Nguyễn Quý Cảnh, Phường An Phú, Quận 2, Tp.Hồ Chí Minh

Tel: (+84) 28.628.10430 - Fax: (+84) 28.628.10437 - Email: vasephcm@vasep.com.vn

VPĐD: số 10, Nguyễn Công Hoan, Ngọc Khánh, Ba Đình, Hà Nội

Tel: (+84 24) 3.7715055 - Fax: (+84 24) 37715084 - Email: vasephn@vasep.com.vn

© Copyright 2020 - Mọi hình thức sao chép phải được sự chấp thuận bằng văn bản của VASEP

DANH MỤC