i got some of these in my reef tank. i got then from a pet store i paid $15 for 3 and thought thay would be cool. The store said thay were in brackish water but thay were full freshwater i dripped them overnight and that was it. 1 did not make it but he looked week anyway... I seen one eat a shrimp at night so ther feeding on ther own.Do not eat fish food of any kind so fare.. Thay are on the glass all the time very cool looking fish in a reef. I will put up somemore pix when i get some good ones..