Thursday, October 06, 2022

Freshwater crabs considered

 CGTN shows how a lake in China is famous for its (freshwater) hairy crabs:

and I thought -that seems a useful thing to have in your country, why don't we have them here (in Australia)?

But it turns out there is an Australian inland freshwater crab - but it's small, only growing its carapace to about 5 cm, apparently.

The Chinese crab has in fact spread around the world:

This crab originates from the temperate waters between East Russia (Vladivostok) to South China, the Korean Peninsular, Japan and Taiwan Province of China. It has been transferred, probably in ballast waters to northern Europe in 1900s and appears to have established self-reproducing populations there. It has more recently been found in North America and Hawaii.

 Learning something new every day...

2 comments:

GMB said...

Most farms should have them. Hillside farms should go banks and terraces. And the water should eventually flow pond to pond to pond all the way down. Hydrating the continent is serious business.

GMB said...

Seriously. I'm not just being funny here. If you see the setup that Sepp Holzer has you will likely weep tears of joy. His farm setup is amazing, and one feature is that they can drain one of the ponds and just walk around picking up crays.