I currently have what I'm 95% sure is a Johnny darter. Found him in the ghost shrimp tank at my LFS. He's running around somewhere in my 65g, and I don't often see him. Also, it's been a couple of months since I got him, and I haven't seen him eat. When I see him, though, his stomach is filled out. He comes up and perches on the branches now and then.
Any clue what he's eating? Could he be eating snails? Scuds? Maybe he's finding little random bugs? I know I have MTS and a few pond snails, not sure what else. I feed dry food that sinks to the bottom, and it sometimes takes the fish some time to gather it up. I offer frozen food now and then, but not enough for that to be what's supporting him.
Any way I can get him to come out more? Do dither fish work, or is he just permanantly crypic-ish?
Also, are Johnny darters compatible with microrasboras? If I could catch him (not sure I could, not eating means no traps), I could possibly move him to my 29g. It's going to house Betta albimarginata and some little fish like ruby tetras and maybe microrasboras. I had a swamp darter take the eye out of a ruby tetra, so I'm a bit unsure about compatibility here.