I've had a few frogfish at different times that didn't survive for one reason or another. I think one was damaged when he climbed the feeding stick trying to gobble the whole stick apparently. Another was most likely due to something he caught from the live feeders I was feeding him (mollies).. his skin got fuzzy.. and he gasped for breath while being inflated.. poor thing. The first was a painted frogfish, the second was a striated angler. One of my frogfish also suffered during a move :-/
Regardless of past history, its been quite awhile and I decided to try again when I saw a tiny black warty frogfish at the LFS for $65. I have a 20g tall tank set up for him with a dusting of sand and some LR from my refugium. I put a 75g rated remora hang-on skimmer on the back with MJ1200 driving it. The tank is on top of a bookshelf next to my computer desk.
He's not taking to stick fed thawed food yet, so I have a few dozen guppies that I feed pellet or flake food before dropping one in the frogfish tank. I'm considering ordering some saltwater ghost shrimp, but the frogfish is so small that they may be too large for him. I may have to just acclimate a population of freshwater guppies to salt as feeders, and get a reproducing population going for now.
I made a rigid tube + flex tube + fishing line feeding sitck as someone suggested, instead of using the blunt end of a bamboo skewer stick split down the middle as I did with prior fish, (sortof like a tiny wooden clothes-pin end for the tail of the food item). I'll keep trying to get him to eat thawed. I have some haddock and uncooked shrimp that I cut very small strips from. I even tried alittle selcon on the haddock but he still didn't bite. He doesn't get exciterd or try to lure the food on the feeding stick. He does go into active hunting mode for live guppies. This is only day 2 though, so hopefully he'll try thawed sooner or later. I make try a piece of haddock with some of the skin on it tomorrow, and perhaps pick up some frozen krill and if I can find silversides small enough.
I'm still not certain how much to feed frogfish. I don't want him to stop eating and/or damage himself. I'm going to try to stick by the 1/2 length of his body every 3 days system for now since he is quite young.
I hope this works out. Fingers crossed and maintenance determined.