C. atropersonatus is my personal favourite. Known to be collected in wide distribution in South America. It does not travel well and losses are high. Hardly any imported into Singapore when i had them that time. They do not do well in tropical weather.
Handle with care and use a net. The pain is like a needle stun if you ever get poked. Another caution is the plastic bag may get punctured during transportation. Ask for double bagged if is an expensive buy. Do not put all of them in a bag. Try to spread them out to be safe from killing itself.
Successfully breeded on a typoon day in Taiwan in 2005.
The male and female are quite obvious when mature. Females are much larger in size ( underbelly and wider ). Males are also shorter in length.
Newly hatched frys. (Left)