well i picked this up in a LFS as a unknown goby and it turned out to be a marble. I have had a tuff time with this little guy because where i planed to keep wouldnt have worked. so i read they can do ok with cichlids aslong as they ger regular food and can hide away, so i reset up a tank and put it in with a bichir, and a couple of odd JD's and although it was doing ok it just didnt seem to get enough food mainly down to its ambush tactics and not willing to venture out and hunt. well over the last month or so i have got it to eat off of tongs, this means i can feed the rest of the fish there dry food as normal then once they settle down for the evening and all the lights are off i can come in and feed it a mix of worms, prawn, smelt, and other meating foods straight off the tongs. its now putting on weight and growing like a weed, with over 1.5" of growth since i got him on the tongs. as a bonus the bichir also now takes from the tongs lol but that gets loads because its not fussy about pellets.
heres a few snaps of it hanging out in its cave.
heres a few snaps of it hanging out in its cave.