{"id":1459,"date":"2026-08-14T15:00:00","date_gmt":"2026-08-14T06:00:00","guid":{"rendered":"https:\/\/vietnam-agri.com\/?post_type=industry_news&p=1459"},"modified":"2026-08-14T15:00:00","modified_gmt":"2026-08-14T06:00:00","slug":"ca-linh-season","status":"publish","type":"industry_news","link":"https:\/\/vietnam-agri.com\/en\/industry_news\/ca-linh-season\/","title":{"rendered":"The start of the Mekong flood season: juvenile ca linh arrive at the An Giang border for the first time"},"content":{"rendered":"

At a border market in An Giang province in southern Vietnam, the juveniles of ca linh, a small fish that heralds the arrival of the flood season, arrived for the first time in early August 2026. Reported by the local paper Nong nghiep & Moi truong on August 9, the processed form with the innards removed is 250,000 dong per kg (about 1,500 yen), and whole raw fish is 190,000 dong (about 1,140 yen). It is the price of the 'first run,' when only 7-10 kg a day still comes in per shop. Though it looks like a mere seasonal-fish story, this one fish condenses the Mekong Delta's water and food, and a seasonality sign that Japanese procurement managers should read.<\/p>\n

Juveniles lined up at the An Giang border market, processed at 250,000 dong\/kg<\/h2>\n

The starting points of the arrivals are Tan Chau, An Phu, and Chau Doc, which border Cambodia. The ca linh juveniles landed here are carried to downstream cities such as Can Tho, Dong Thap, and Vinh Long. This season the arrival is later than last year, and supply is still thin. At the market, products of the same flood season-the yellow sesbania flower 'bong dien dien' and the water-lily stem 'bong sung'-have also begun to line up.<\/p>\n\n\n\n\n\n\n\n\n
Items<\/th>\nLocal price (dong)<\/th>\nYen conversion (10,000 dong approximately 60 yen)<\/th>\n<\/tr>\n<\/thead>\n
ca linh juveniles, processed (lam san)<\/td>\n250,000\uff0fkg<\/td>\nabout 1,500 yen\/kg<\/td>\n<\/tr>\n
ca linh juveniles, whole raw fish (nguyen con)<\/td>\n190,000\uff0fkg<\/td>\nabout 1,140 yen\/kg<\/td>\n<\/tr>\n
bong dien dien (sesbania flower)<\/td>\n50,000\u301c60,000\uff0fkg<\/td>\nabout 300-360 yen\/kg<\/td>\n<\/tr>\n
bong sung (water-lily stem)<\/td>\n6,000 per bundle<\/td>\nabout 36 yen per bundle<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Once the peak season comes, when adult fish flow in in large quantities, the unit price falls to a fraction. The price of 1,500 yen should be understood as a seasonal premium attached strictly to the 'first run that can be eaten only now.'<\/p>\n

Its nature: a migratory carp-family fish that comes down awaiting the floodwaters<\/h2>\n

Ca linh is neither a sea bass nor a catfish, but belongs to the genus Henicorhynchus of the gudgeon subfamily in the carp family (Henicorhynchus<\/em>, in Japanese a small 'mud carp'), a small freshwater fish. It is a few centimeters in body length, slender, and a bluish silvery-white. There is a reason this fish appears in bulk only once a year, in the flood season.<\/p>\n

The genus Henicorhynchus has a migratory habit of moving laterally onto the floodplain when the river overflows in the flood, and returning to the main stream when the water recedes. Juveniles raised around upstream Cambodia's Tonle Sap Lake (locally called 'Bien Ho = a sea-like lake') are carried down to the delta on the Mekong's floodwaters. In other words, the day juveniles line up at the An Giang market is almost synonymous with the day the water began to overflow upstream. This is why the local seasonal expression 'ca linh has come = mua nuoc noi (the flood season) has begun' holds. The sentence that this season's arrival is later than last year's suggests the possibility that the upstream flood itself is delayed.<\/p>\n

From juveniles to adults: the flood-season table and the preserved food mam<\/h2>\n

Ca linh changes both its name and how it is eaten by size. The early-run 'juveniles (ca linh non)' have soft bones and their virtue is being eaten whole. Locally, they are used in a sour soup 'canh chua' combined with the sesbania yellow flower that circulates in the market at the same time, and in a sweet-and-salty simmered dish 'kho.' They are dishes that hold only in the current period when the bones do not catch, and the reason the early-run, higher-priced juveniles sell is that there is demand targeting this texture.<\/p>\n

When, in the latter half of the flood season, adult fish (ca linh gia) are landed in large quantities, the portion that cannot be eaten up is transformed into 'mam ca linh,' a fermented preserved food pickled in salt and rice bran. In delta households, this fish sauce and fish-sauce pickle becomes the source of umami in the dry season. The design by which a single small fish unfolds seamlessly into raw consumption, simmered dishes, soup, and fermented seasoning is the very life of the delta, which repeats flooding and the dry season every year. This cycle of water and farming, the workings of Mekong Delta agriculture<\/a> is continuous with the flood-premised way of life built into it.<\/p>\n

The three signals Japanese buyers should read: 'wild, seasonal, upstream dams'<\/h2>\n

This one fish is also rich in implications from the standpoint of sourcing Vietnamese seafood. First, the point that ca linh is not farmed but a wild seasonal catch. When it comes to delta seafood, the farming value chain of shrimp and pangasius (basa)<\/a> fish that can be managed year-round from pond to processing plant to export port are the lead actors of export. Ca linh is at the opposite pole, landed only a few months a year, only at the riverside of the border. Its quantity and price are hard to read, and it does not easily fit year-round contract sourcing.<\/p>\n

Next, the fragility in which a delay in the flood directly links to supply. As this season's arrival delay shows, the yield swings greatly year to year depending on rainfall and the upstream flood. And the biggest variable is upstream dams. The dams on the Mekong main stream smooth out the flood peak and work to weaken the 'flood pulse' by which fish spread onto the floodplain. If ca linh's early run becomes later and thinner year by year, it could be a harbinger of the whole delta's wild fishery resources shrinking. Inquiries for it as a seasonal premium ingredient are, Mekong Delta flooding and agriculture<\/a> also the flip side of the structural risk it carries. What the Japanese side should pick up is the room for small-quantity, season-limited handling in preservable forms such as dried and fermented products, and the sharing of the premise that 'wild delta product = sensitive to environmental change.'<\/p>\n

Summary: the water-level calendar that one August juvenile announces<\/h2>\n

The 250,000-dong ca linh juvenile is both the first taste of the season and, at the same time, a water gauge for upstream Tonle Sap. When the small fish line up at the An Giang market, the flood has begun; when it is late, the flood is also late. Unlike process-manageable fish such as shrimp and basa, for this fish alone the river and the weather decide the price. If you are looking at Vietnamese delta fisheries, it is worth also running your eye over the one line of how many kg entered the August border market, alongside the farming export statistics.<\/p>\n

Sources<\/h2>\n