what does a crossbred neo/cardina shrimp look like? I hear everyone say to look out to keep them from cross breeding but what does an offspring look like? 

I didn't know different species can cross breed. Same species can cross breed for instance Cherry Red Shrimp and a Snowball shrimp can cross breed. The babies aren't ideal because instead of having bright red shrimp or snow white shrimp you will have washed out red and redish white shrimp. A mix in the middle which won't be as bright and colorful.