Common advice given is to never keep more than one black ghost knife fish in an aquarium. Supposedly they will fight, just as rainbow and red tail black sharks do.
A friend with far more experience than I stated that this is absolutely true... unless you keep a group and get them all as babies. Just as with the aforementioned sharks, you don't want to keep just 2 or even 3. A group of 4 or preferably more will diffuse aggression amongst the individuals and they will form a hierarchy.
I took his word for it and got a group of 6 baby BGKs. All are doing very well so far at the 1 week mark. If things go sour I can separate them. But each fish seems to have staked out its own small territory where it likes to hang out. They mostly stay out of each other's territories and all is well. I see them tootling about looking for food, usually 2 or 3 at a time. They show no aggression in common areas. And 2 of them have made friends and share their ghost house together.
The big thing seems to be making sure each fish has a place to call home and lots of things to break up lines of sight and provide cover. I have Lee's Ghost Houses all over the place, along with plants, rocks, hollow logs and driftwood. One of them prefers to hang out behind a filter stem.
They are tiny right now and are temporarily in a 90 gallon with juvenile Geophagus abalios and Mesonauta festivus but will be moving to a 600 gallon.
Has anyone else done this? What was your experience like? I trust my friend's advice and so far my experience has proven him right, but I'd be interested to hear from others who have done the same, especially long term.
A friend with far more experience than I stated that this is absolutely true... unless you keep a group and get them all as babies. Just as with the aforementioned sharks, you don't want to keep just 2 or even 3. A group of 4 or preferably more will diffuse aggression amongst the individuals and they will form a hierarchy.
I took his word for it and got a group of 6 baby BGKs. All are doing very well so far at the 1 week mark. If things go sour I can separate them. But each fish seems to have staked out its own small territory where it likes to hang out. They mostly stay out of each other's territories and all is well. I see them tootling about looking for food, usually 2 or 3 at a time. They show no aggression in common areas. And 2 of them have made friends and share their ghost house together.
The big thing seems to be making sure each fish has a place to call home and lots of things to break up lines of sight and provide cover. I have Lee's Ghost Houses all over the place, along with plants, rocks, hollow logs and driftwood. One of them prefers to hang out behind a filter stem.
They are tiny right now and are temporarily in a 90 gallon with juvenile Geophagus abalios and Mesonauta festivus but will be moving to a 600 gallon.
Has anyone else done this? What was your experience like? I trust my friend's advice and so far my experience has proven him right, but I'd be interested to hear from others who have done the same, especially long term.