I brought a black ghost knife home from the LFS 2 - 2.5 months ago at 3 inches, slightly underfed. He's now pushing 7.5 sightly chubby inches, snout to tail. For a fish that's reportedly slow growing, this seems a little crazy. I had anticipated maybe 1/2 inch a month, allowing for his age, but ~2"/month? 
I've heard that rapid growth like this is detrimental to the lifespan of the fish, so I was thinking of slowing him down a bit. Right now, he's getting frozen bloodworms, brine shrimp, krill, tubifex, beefheart and whatever else I can get him to eat, rotated by day, fed once a day in the evenings. He's packing away about one cubes worth per feeding (what I try to limit him to at a minimum). Cube is approx. 1.5cm^3, and gone in under a minute.
Should I change the frequency and amount, or just the amount? Say, one cube spaced over 12 hours (2 feedings), or a half / 3/4 cube at the normal time? Maybe feed lees of one particular item? Not bother at all?
Suggestions appreciated.
-V
I've heard that rapid growth like this is detrimental to the lifespan of the fish, so I was thinking of slowing him down a bit. Right now, he's getting frozen bloodworms, brine shrimp, krill, tubifex, beefheart and whatever else I can get him to eat, rotated by day, fed once a day in the evenings. He's packing away about one cubes worth per feeding (what I try to limit him to at a minimum). Cube is approx. 1.5cm^3, and gone in under a minute.
Should I change the frequency and amount, or just the amount? Say, one cube spaced over 12 hours (2 feedings), or a half / 3/4 cube at the normal time? Maybe feed lees of one particular item? Not bother at all?
Suggestions appreciated.
-V
