crayfish
Crayfish is native to the southeastern United States, so it is also called American crayfish. Native to the Gulf of Mexico, especially in the mouth of the Mississippi River, it is also called Louisiana crayfish.
Crayfish is an animal from saprophagous. It was introduced to Japan in 19 18 as bait for raising bullfrogs, and then introduced to China from Japan. Now it has become an important resource of freshwater shrimps in China and is widely distributed in the middle and lower reaches of the Yangtze River.
As an exotic species, crayfish will develop rapidly without the suppression of natural enemies according to the normal script. However, it has the largest natural enemy in China, and now it can only survive by artificial breeding.
Cultured crayfish
The biggest pain of eating crayfish every time is that there is too little meat. It would be perfect if crayfish could be bigger.
No, in Australia, there is the largest freshwater crayfish on earth, with a maximum weight of 5 kg.
Tasmanian giant freshwater crayfish, with the same appearance as crayfish, can grow to 80 cm at the maximum. It is an out-and-out giant and has almost no natural enemies in adulthood, except, of course, humans.
Giant lobster
This giant lobster is an omnivore, eating rotten wood and animal meat, as well as leaves and insects falling into the water. As a minor, because the individual is too small, it is easy to be attacked by other animals and will secretly hide near the shallow sea. When you reach adulthood, when you gain weight, you will wander around and hunt near the streams in the forest.
Tasmanian giant freshwater crayfish
It is worth mentioning that although the giant lobsters are tall and big, their cubs are pitiful, only about 6 mm in size, and any carnivorous insect can eat them.
Giant lobsters have a long life among shrimps, and their life span can reach 40 years. Therefore, the mature period is very long. It takes 9 years for males to mature sexually, and it takes 14 years for females, and they reproduce every two years.
Its head and chest are very thick and have a hard shell, and depending on the habitat and location, the color of their shell will change from dark brown to light black, and even become steel-like blue or dazzling blue, and the color is very colorful.
Close-up of giant lobster
Such delicious food can't escape human sanctions. Due to the large-scale killing by local people, this giant lobster is now an endangered species.