i will take it if your still giving it away. i have an small acrylic cube that he won't be able to break. have you gotten a better look at the markings? i am wondering if it is a smasher or a poker. you said black and white so i am thinking ciliata or latirostris. you can catch it with a small gatorade bottle with a piece of shrimp or other food in it. he will climb in to get the food. live food works best because he sees the movement.

~alex