After many years in the hobby Dats have finally caught my eye. I would like to add one or a few to my 125g with 2 baby limas and a 5" oscar. My LHF has three about 3" each. Not sure on the species, I havent actually seen them yet. I wanted to know do they do better in groups? Im not sure if i wanna get all 3 or just one. I was thinking with 3 my oscar would be less likely to pick on either of them. Also is there any difference (besides appearance) between the species? If there is anything you think I should know about keep Dats please feel free to clue me in. Thanks guys!