Crayfish get complicated. Especially in China. 10 years ago, although a few people knew what they were, next to no-one ate them. The one species of Chinese crayfish, Cambaroides dauricus was (and still is) very rare and they are very small, so not really worth eating. Today in 2024, it is said that 90% of all crayfish eaten by humans are done so in China.
But first the name. For a start, as I’m sure everyone knows, they are not fish but crustaceans. More importantly, they go under four common names in English. All are derived from the Old French word crevisse, at first spelled creusses (wih ‘u’ being pronounced as ‘v’ in Old English). This first appeared in the early 1400s. In modern French, it is écrevisse.
By 1555 this had morphed into crefysshe, the earliest fish-like reference, found in Richard Eden's Decades of the Newe Worlde or West India (eG-friendly Amazon.com link).
Crawfish followed in 1624 in The Generall Historie of Virginia, New England, and the Summer Isles (eG-friendly Amazon.com link) by Capt. John Smith, now mainly known for his part in the Pocahontas myths and legends.
“They caught‥great craw-fishes.”
More recent arrivals are crawdad (in an 1878 Indiana magazine) and its variant crawdaddy (1901 in a Minnesota news paper, The Globe).
In China they are 小龙虾 (xiǎo lóng xiā). This literally means ‘small dragon shrimp’ but more pragmatically means ‘little lobster’. This can be misleading as some restaurants drop the ‘small’ part on their menus leaving the diners expecting lobster but getting crayfish. Price is your best guide. Lobster is much, much more expensive; one lobster will cost more than 2 kg of crayfish. I've never heard of any restaurant charging lobster prices for crayfish. An older name, 螯虾 (áo xiā) is less ambiguous, meaning 'nipper (or chela) shrimp', but I guess the marketing people saw that one off.
Having sorted out names (at least in two languages) there is still confusion. Where do the things come from?
The crayfish eaten today, Astacus fluviatilis were first imported to East Asia in the 1930s from Louisiana in the USA, to Japan. To feed not humans but bullfrogs which were and remain a popular protein. The frogs were imported from the USA, too.
Only during the years after World War 2, did Japanese troops introduce the Louisiana crayfish to China. They were still largely shunned as being unfit for human consumption although they did for a time become popular pets.
However some people, mainly rural peasant farmers, were eating them as a cheap or even free food supply. In the 2000s, many of these people, especially the younger generations, left their homes to seek employment in the cities when China became the world’s factory and the economy was starting to boom. Like migrants everywhere, they took their food culture with them and their new neighbours were happy to supply them with their needs.
By 2016, the number being eaten had risen hugely and a trend developed, first in Shanghai then across China. Crayfish became a hugely popular meal among mainly young people in the same way as the various hotpots across China are enjoyed. As a communal activity.
Groups of friends began to meet over huge platters of crayfish, peeling them themselves and washing them down with beers. Informal, messy and great fun! They would get through kilos of the critters – 20 kg for a party of four is not uncommon. This continues to this day.
Crayfish farms began to sprout up all over China but especially in Hebei and Jiangsu provinces – it is no coincidence these border Beijing and Shanghai, respectively.
Today, live crayfish are ubiquitous; supermarkets carry them in huge tankfuls and I can have them delivered to my door live or cooked in twenty minutes.
Crayfish in my local supermarket
So how are they cooked, you rightfully ask.
Generally, they are stir-fried with popular seasonings such as garlic, or with Beijing’s 13-spice mix.
13-Spice Powder
麻辣 (má là), the well known Sichuan flavour of Sichuan pepper and chilli is also a popular choice. The liquid component of any sauce is often beer although that's usually mostly boiled off; it tends to be a dry but sticky dish.
Mala crayfish being cooked
You can even get your crayfish fix at KFC or Pizza Hut where they throw them on pizzas.
You may have come across Lay’s crayfish chips / crisps which are now sold through Amazon, but originated in China.
All that said, I seldom eat them. Too much pain for so little gain. I’m sure de-shelling them and finding the meat consumes more calories than they replace! Give me real lobsters! Hang the expense!