Animal Stories - Black Ghost Knife Fish


Animal-World Information about: Black Ghost Knife Fish

The Black Ghost Knifefish is the most well known species of knife fish in the aquarium industry!
Latest Animal Stories
kye turnbull - 2013-04-10
my black ghost knife wont come out of his tunnel! he just stays in there day and night,is this usual, theirs plants to dim the light and 2 tunnels and i feed live and frozen foods almost every day!

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  • Jeremy Roche - 2013-04-11
    That is pretty normal for them.  More then likely moves around when no movement in room.
  • kye turnbull - 2013-04-12
    all it needed was incouagement! i sang wooo go ghosty woooo ghosty wooo go ghosty! and he came out :D
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blackghost - 2013-02-13
Just to clarify.... 1) BG Knifes also have a dorsal fin which is kept lying in a groove on the back 2) the anal and caudal fins are NOT fused 3) THEY ARE NOT SCALELESS

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D@rkPr!nce - 2012-12-23
I have a black ghost knife about 12', an silver aro 22' and a pair of full grown parrots, in a 125g, the parrots r about 5+yrs old, what else can i put in.. I was thinking of Stingray, n moonys, kindly suggest some fishes.. Thanks a ton, in advance.. :D

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  • Jeremy Roche - 2012-12-23
    That tank is maxed out.  The arrowana is going to get huge!  A bottom feeder like the stingray would normally work but with these messy fish it would be extremely difficult to keep the water conditions right for the addition.
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mahesh - 2012-11-06
I have bought two bgk fish but i am Confucius which one is male n which one is female how to know this they are 3.5'

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J - 2012-09-27
Perhaps a better question would be, is a 4' clown loach safe with a 10' Black Ghost Knife BGK?

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J - 2012-09-27
I have 7 1'-1.5' Clown Loaches and 5 2' Weather/Dojo Loaches, with a 2.5' BGK. They are more then happy now, but I know loaches are slow growers, especially after 4-5'. Will The BGK outgrow the Clowns and Dojos, or should they all grow about the same rate to be safely tanked together? Please let me know. If not I will take BGK back to the store (deadline for return is in 6 days) and wait a year to give my loaches time to get a head start on growing. (PS tank is 80 gals [planning to upgrade to 200] with over 800gph filtration and a 320gph water pump and 2 air stones). Thanks for any advice!

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sonja - 2012-09-25
My ghost fish means the world to me. As my kids call him puppy dog he loves his blood worms, I would just like to know how do you learn them to eat from your hand .

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  • Jeremy Roche - 2012-09-25
    Use forceps or tongs and dangle in front of the fish.  Bring it closer to the surface as the fish gets use to it.  I would not recommend using your fingers.  Humans carry germs and bacteria that is not good for fish.
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BEV - 2012-08-04
I have had my ghost fish for many years, recently he has started turning white, is this a disease?

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  • Clarice Brough - 2012-08-05
    They do have a more silver 'nocturnal' coloring. Fading is also attributed to a water chemistry change (often a pH change), so recommendations are to start with a 50% water change.
  • Clarice Brough - 2012-08-05
    Also, here's a bit more from my research. Besides water conditions, Bob Fenner says (wetwebmedia.com) 'poor water quality, stress, age, diet, there are many things that can attribute to these fish changing color'
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colleen - 2012-06-21
I have just got my first BGK today.He is just lovely,he has already made a home in a rock that is in the tank and comes out and swims around checking out his new home.There are also a couple of other places he can call home in the tank as it is quite big. My son will be very happy when he gets home from school as he wanted me to get him one a few months ago. He is appx 5 inches long and I look forward to watching him grow into a big happy healthy fish. I hope he will be ok as he is just delightful,his tank mates are 2 clown loaches,2 silver sharks,1 silver dollar and 3 smaller fish that I hope he won't eat.

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desirea - 2012-06-03
I have a BGK for almost a year now n he seems like hes 4 in.
But I have it in a 14g tank... is that too small???
And I heard that when they are mating their tails will flash red.... is that true???

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  • Jeremy Roche - 2012-06-04
    If is is the only fish in the tank, 14 gallon tank is fine. Will need bigger as he grows.
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